New sp_cache C API. When an SP is dropped, old caches (in other threads)
become invalid and are cleared.
Also, the caches in THD are only created on demand.

fix to functions as well.

Two missing methods added to Item_splocal + test case.

Also copy and restore order_list and group_list for selects in SPs.

into mysql.com:/home/pem/work/mysql-5.0

(updated) Protocol_cursor class.
Also did some bug fixes.

into laptop.sanja.is.com.ua:/home/bell/mysql/bk/work-udf-5.0

executing sub-statements (selects) prevents crashes intermittent
crashes.
Also fixed bug in sql_yacc.yy (generated a hpop instruction when
not needed).

into laptop.sanja.is.com.ua:/home/bell/mysql/bk/work-udf-5.0

into laptop.sanja.is.com.ua:/home/bell/mysql/bk/work-udf-5.0

into narttu.mysql.fi:/my/mysql-4.1

   .c files (the IBM Visual Age C compiler aborts with a syntax error
   on these)

   (instead of libedit, which is the default for 4.1)
 - brushed up the usage help text a bit

into mysql.com:/home/dlenev/src/mysql-4.1-868

  Typo fix: redundant "in"

into mysql.com:/home/dlenev/src/mysql-4.1-868

  comp_err failed to compile error message file when a
  character set was not incompiled.

  Better English message

into mysql.com:/space/my/mysql-4.1-build

   cmd-line-utils/readline from the commercial distribution
 - fixed some copyright headers so mysql-copyright can process them

into bar.mysql.r18.ru:/usr/home/bar/mysql-4.1

into mysql.com:/home/dlenev/src/mysql-4.1-868

into gw.mysql.r18.ru:/usr/home/ram/work/4.1

  Bug fix

into mysql.com:/home/dlenev/src/mysql-4.1-868

  There are some problems compiling with pure "configure"
  I need to fix it first.

into bar.mysql.r18.ru:/usr/home/bar/mysql-4.1

sequence boundaries in functions LIKE and LOCATE in
the case of "binary" collation. Comparison was done
like if the strings were just a binary strings without
character set assumption.

embedded library
hash_insert renamed to my_hash_insert to avoid name intersection
with another libraries
is there better idea?