- Include the valgrind suppressions from the FB upstream

- Use HAVE_Valgrind, not HAVE_Purify (like the rest of MariaDB code does)
  The call to DisownData() is now actually disabled under Valgrind

Using val_decimal_from_int() instead, which provides exactly
the same functionality.

Since the client host can be extracted from the network connection, it can
always be printed. This makes it easier to find out where a slave is
replicating from. It could also be used to automatically discover slaves
that are replicating from a master.

This is an issue of memory alignment of variable argument when calling my_multi_malloc().
The fix is strictly casting allocating size to "uint".

Perl DBD::MariaDB driver is available CPAN and is already used in
production environment.

This will allow to check ABI for C++ plugins defined in include/mysql/plugin.h
e.g. like this:

struct st_mysql_xxx
{
 int interface_version;
 const class XXX *xxx;
};

Discussed with Serg.

plugin/versioning adds its own native functions by calling
item_create_append(). So GIS functions initialized two times.

Moving the initialization of GIS functions from item_create_append()
to item_create_init().

Cleanups.

* Mitigate race candition when got_no_such_table remains uncleared.
* Remove warnings about deprecated SELECT .. FROM .. INTO ...

MDEV-16222 Assertion `0' failed in row_purge_remove_sec_if_poss_leaf on table with virtual columns and indexes

MDEV-19175 Server crashes in ha_partition::vers_can_native upon INSERT DELAYED into versioned partitioned table

Uninitialized LEX::part_info on ha_partition::vers_can_native().

MDEV-16222 Assertion `0' failed in row_purge_remove_sec_if_poss_leaf on table with virtual columns and indexes

Cause
Stale thd->m_stmt_da->m_sql_errno which is from different invocation.

Fix
Reset error state before attempt to open table.

Another fail fix:

undefined reference to `ZipLoadFile`

MDEV-19972 Move GIS code from Item_bool_func::get_full_func_mm_tree() to Item_func_spatial_rel::get_mm_leaf()

In this statement:

  (uint *) thd->alloc(sizeof(uint) * field->interval->count+1);

parentheses around the '+' operator were missing. So too few memory
was allocated, which caused ASAN builds to fail on these tests:

  innodb.innodb-ucs2
  parts.part_ctype_utf32
  main.mix2_myisam_ucs2
  main.case
  main.ctype_ucs
  main.ctype_utf16
  main.ctype_utf16_uca
  main.ctype_utf16le

Fixed to a correct version with parentheses:

  (uint *) thd->alloc(sizeof(uint) * (field->interval->count+1));

According to the code, it was Windows specific "simulated AIO"
workaround. The simulated s not supported on Windows anymore.

Thus, remove the dead code

We use own IO callbacks from server code anyway.

- allow incremental linking for Debug build
- do not allow EDITANDCONTINUE (/ZI)
- better clang-cl warnings flags