variables and reduce the number of ifdef's

be set to unsupported value.

MDEV-6350: Excessive unnecessary memory allocation at InnoDB/XtraDB
startup if LZO is installed.

Auto-generate the allowed list of values for enum/set/flagset options
in --help output. But don't do that when the help text already has them.

Also, remove lists of values from help strings of various options, where
they were simply listed without any additional information.

VS doesn't like #ifdefs inside a macro expansion. move them outside

This patch allows up to 64K pages for tables with DYNAMIC, COMPACT 
and REDUNDANT row types. Tables with COMPRESSED row type allows 
still only <= 16K page size. Note that single row size must be
still <= 16K and max key length is not affected.

Removed: innodb_use_lz4 configuration parameter

Added: innodb_compression_algorithm configuration parameter
0 = no compression, 1 = ZLIB, 2 = LZ4, 3 = LZO

Fixed issue with incorrect trim calculations

(Inadequate background LRU flushing for write workloads with InnoDB compression).
  
  If InnoDB compression is used and the workload has writes, the
  following situation is possible. The LRU flusher issues an LRU flush
  request for an instance.  buf_do_LRU_batch decides to perform
  unzip_LRU eviction and this eviction might fully satisfy the
  request. Then buf_flush_LRU_tail checks the number of flushed pages in
  the last iteration, finds it to be zero, and wrongly decides not to
  flush that instance anymore.
  
  Fixed by maintaining unzip_LRU eviction counter in struct
  flush_counter_t variables, and checking it in buf_flush_LRU_tail when
  deciding whether to stop flushing the current instance.

Added test cases for new configuration files to get mysql-test-run suite sys_vars
to pass. Fix some small errors.

Due to how gap locks work, two transactions could group commit together on the
master, but get lock conflicts and then deadlock due to different thread
scheduling order on slave.

For now, remove these deadlocks by running the parallel slave in READ
COMMITTED mode. And let InnoDB/XtraDB allow statement-based binlogging for the
parallel slave in READ COMMITTED.

We are also investigating a different solution long-term, which is based on
relaxing the gap locks only between the transactions running in parallel for
one slave, but not against possibly external transactions.

XtraDB: don't accept MYSQL_TYPE_NULL as a column type

unnecessary. There is a lot more index pages than there is normal pages.
Earlier all pages were compressed and this provided best performance and
compression ratio. Added status variable to show how many non index pages
are written.

innodb_force_primary_key default off. If option is true, create table without 
primary key or unique key where all keyparts are NOT NULL is not
accepted. Instead an error message is printed. Variable value can
be changed with set global innodb_force_primary_key = <value>.

pages are compressed if false index pages are not compressed.

Fixed small output error when page_compression_level was incorrectly
given.

as it is not used/implemented.

- Table locks now ends with state "After table lock"
- Open table now ends with state "After opening tables"
- All calls to close_thread_tables(), not only from mysql_execute_command(), has state "closing tables"
- Added state "executing" for mysql admin commands, like CACHE INDEX, REPAIR TABLE etc.
- Added state "Finding key cache" for CACHE INDEX
- Added state "Filling schema table" when we generate temporary table for SHOW commands and information schema.

Other things:
Add limit from innobase for thread_sleep_delay. This fixed a failing tests case.
Added db.opt to support-files to make 'make package' work


mysql-test/suite/funcs_1/datadict/processlist_val.inc:
  Use new state
mysql-test/suite/funcs_1/r/processlist_priv_no_prot.result:
  Updated test result because of new state
mysql-test/suite/funcs_1/r/processlist_val_no_prot.result:
  Updated test result because of new state
sql/CMakeLists.txt:
  Have option files in support-files
sql/lock.cc:
  Added new state 'After table lock'
sql/sql_admin.cc:
  Added state "executing" and "Sending data" for mysql admin commands, like CACHE INDEX, REPAIR TABLE etc.
  Added state "Finding key cache"
sql/sql_base.cc:
  open tables now ends with state "After table lock", instead of NULL
sql/sql_parse.cc:
  Moved state "closing tables" to close_thread_tables()
sql/sql_show.cc:
  Added state "Filling schema table" when we generate temporary table for SHOW commands and information schema.
storage/xtradb/buf/buf0buf.c:
  Removed compiler warning
storage/xtradb/handler/ha_innodb.cc:
  Add limit from innobase for thread_sleep_delay. This fixed a failing tests case.
support-files/db.opt:
  cmakes needs this to create data/test directory

Added option to disable multi-threaded flush with innodb_use_mtflush = 0
option, by default multi-threaded flush is used.

Updated innochecksum tool, still it does not support new checksums.

Fixed issue on multi-threaded flush at shutdown.
Removed unnecessary startup option innodb_compress_pages.
Added a new startup option innodb_mtflush_threads, default 8.

option using cmake find_library. Fixed bunch of compiler
warnings.

mysql-test/r/lowercase_table2.result:
  Updated result
  (The change happend because we don't try to open the table anymore as part of create table)
mysql-test/suite/rpl/r/create_or_replace_mix.result:
  Fixed result file
mysql-test/suite/rpl/r/create_or_replace_row.result:
  Fixed result file
mysql-test/suite/rpl/r/create_or_replace_statement.result:
  Fixed result file
mysql-test/suite/rpl/t/create_or_replace.inc:
  Drop open temporary table
mysys/my_delete.c:
  Added missing newline
plugin/metadata_lock_info/mysql-test/metadata_lock_info/r/user_lock.result:
  Fixed result
  (Lock names was before off by one. Was corrected by my previous patch)
sql/sql_select.cc:
  Fixed compiler warnings by adding missing casts
storage/connect/ha_connect.cc:
  Fixed compiler warnings
storage/innobase/os/os0file.cc:
  Fixed compiler warnings
storage/xtradb/btr/btr0btr.cc:
  Fixed compiler warnings
storage/xtradb/handler/ha_innodb.cc:
  removed not used function
strings/ctype-uca.c:
  Fixed compiler warnings
support-files/compiler_warnings.supp:
  Added suppression for warnings that are wrong or are not serious andthat we don't plan to fix.

Merged page compression feature to XtraDB storage engine.

Added feature where page compression can use lz4 compression
method (innodb_use_lz4, default OFF).

Syntax. Server support. Test cases.
InnoDB bugfixes:
* don't mess around with system sprintf's, always use my_error() for errors.
* don't use InnoDB internal error codes where OS error codes are expected.
* don't say "file not found", when it was.

Update InnoDB to 5.6.14
Apply MySQL-5.6 hack for MySQL Bug#16434374
Move Aria-only HA_RTREE_INDEX from my_base.h to maria_def.h (breaks an assert in InnoDB)
Fix InnoDB memory leak

sort xtradb status variables

Added test case for new system variable innodb_use_stacktrace and made sure that it can be used only on startup. Fixed compiler problems on solaris and other platforms that do not contain necessary headers and functions.

MDEV-5247: DB locked up at btr0cur.c line 568. There is inconsistent and non logical usage of have_LRU_mutex and incorrect value on ha_innodb.cc when buf_LRU_free_block is called. Additionally, for future long semaphore wait cases added a new configuration variable innodb_use_stacktrace. If this variable is true a signal handler for SIGUSR2 is installed when InnoDB server starts and when a long semaphore wait is detected at sync/sync0array.c we send SIGUSR2 signal to waiting thread and thread that has acuired RW-latch. For both threads a full stacktrace is produced as well as its is possible.

storage/xtradb/handler/ha_innodb.cc:
  Fixed wrong last argument to buf_LRU_free_block(): The LRU chain is already locked by this function.

Add an error code to the wait_for_commit facility.

Now, when a transaction fails, it can signal the error to
any subsequent transaction that is waiting for it to commit.
The waiting transactions then receive the error code back from
wait_for_prior_commit() and can handle the error appropriately.

Also fix one race that could cause crash if @@slave_parallel_threads
were changed several times quickly in succession.

Implement facility for the commit in one thread to wait for the commit of
another to complete first. The wait is done in a way that does not hinder
that a waiter and a waitee can group commit together with a single fsync()
in both binlog and InnoDB. The wait is done efficiently with respect to
locking.

The patch was originally made to support TaoBao parallel replication with
in-order commit; now it will be adapted to also be used for parallel
replication of group-committed transactions.

A waiter THD registers itself with a prior waitee THD. The waiter will then
complete its commit at the earliest in the same group commit of the waitee
(when using binlog). The wait can also be done explicitly by the waitee.

MDEV-4398 - remove incorrect fix, replace with correct one  -  change default to  OFF for innodb_use_fallocate

Change default for innodb_use_fallocate to FALSE, due to bugs in older Linux kernels (posix_fallocate() does not always guarantee that file size is like one specified)

 - Fix embedded build

 - Backport disable of fallocate, it creates too short ibdata1
   when used with O_DIRECT on old kernels

 - Do not disable innodb during .deb install, we need it for
   mysql.rpl_slave_state table.