Buffer overflow due to wrong key length in partitioning

Changed to the correct key_length function.

into  mysql.com:/home/svoj/devel/mysql/BUG11392/mysql-5.1-engines

into  mysql.com:/home/svoj/devel/mysql/BUG11392/mysql-5.0-engines

into  stella.local:/home2/mydev/mysql-5.1-axmrg

into  stella.local:/home2/mydev/mysql-5.0-axmrg

Comment sign of -- at line begin in test files lead to warnings
from mysqltest.

Changed -- to #.

into  stella.local:/home2/mydev/mysql-5.1-axmrg

into  stella.local:/home2/mydev/mysql-5.1-axmrg

into  stella.local:/home2/mydev/mysql-5.0-axmrg

into  stella.local:/home2/mydev/mysql-5.0-axmrg

into  stella.local:/home2/mydev/mysql-4.1-axmrg

into  pcg5ppc.xiphis.org:/Network/Servers/anubis.xiphis.org/home/antony/work/p2-bug30296.1-merge-5.1

Fulltext boolean mode phrase search may crash server on platforms
where size of pointer is not equal to size of unsigned integer
(in other words some 64-bit platforms).

The problem was integer overflow.

Affects 4.1 only.

into  stella.local:/home2/mydev/mysql-5.1-bug4692

into  mysql.com:/home/gluh/MySQL/Merge/5.1-opt

Disabling and enabling indexes on a non-empty table grows the
index file.

Disabling indexes just sets a flag per non-unique index and does not
free the index blocks of the affected indexes. Re-enabling indexes
creates new indexes with new blocks. The old blocks remain unused
in the index file.

Fixed by dropping and re-creating all indexes if non-empty disabled
indexes exist when enabling indexes. Dropping all indexes resets
the internal end-of-file marker to the end of the index file header.
It also clears the root block pointers of every index and clears the
deleted blocks chains. This way all blocks are declared as free.

  "Dynamic plugins fail to load on FreeBSD"
  ELF executables need to be linked using the -export-dynamic option to
  ld(1) for symbols defined in the executable to become visible to dlsym().
  Also, do not build plugins on an all-static build.

into  anubis.xiphis.org:/usr/home/antony/work/p1-bug31473.1-backport-5.1

to get rid of a name clash among *deleted* files on case-insignificant file systems.

into  mysql.com:/home/svoj/devel/mysql/BUG31159/mysql-5.1-engines

into  mysql.com:/home/svoj/devel/mysql/BUG31159/mysql-5.0-engines

into  mysql.com:/home/svoj/devel/mysql/BUG31159/mysql-4.1-engines

ucs2 doesn't provide required by fulltext ctype array. Crash
happens because fulltext attempts to use unitialized ctype
array.

Fixed by converting ucs2 fields to compatible utf8 analogue.

into  mattiasj-laptop.(none):/home/mattiasj/clones/mysql-5.1-bug30878

into  mattiasj-laptop.(none):/home/mattiasj/clones/mysql-5.1-bug30878

  causes the Server to crash.

Accessing partitioned table with an apostrophe in partition options
like DATA DIRECTORY, INDEX DIRECTORY or COMMENT causes server crash.

Partition options were saved in .frm file without escaping.
When accessing such table it is not possible to properly restore
partition information.
Crashed because there was no check for partition info parser failure.

Fixed by escaping quoted text in the partition info when writing it to
the frm-file and added a check that it was able to parse the partition
info before using it 

NOTE: If the comment is written by an earlier version of the server,
the corrupted frm-file is not fixed, but left corrupted, you have to
manually drop the table and recreate it.

into  mysql.com:/home/gluh/MySQL/Merge/5.1-opt

into  mysql.com:/home/gluh/MySQL/Merge/5.0-opt

into  mysql.com:/home/gluh/MySQL/Merge/5.1-opt

into  mysql.com:/home/gluh/MySQL/Merge/5.0-opt

into  mysql.com:/home/gluh/MySQL/Merge/5.1-opt

into  mysql.com:/home/hf/work/30638/my50-30638

into  polly.(none):/home/kaa/src/opt/mysql-5.0-opt