into  dl145s.mysql.com:/data0/mhansson/bug30942/my51-bug30942

into  magare.gmz:/home/kgeorge/mysql/autopush/B31094-5.1-opt

A rule was introduced by the 5.1 part of the fix for bug 27531 to 
prefer filesort over indexed ORDER BY when accessing all of the rows of a 
table (because it's faster). This new rule was not accounting for the 
presence of a LIMIT clause.
Fixed the condition for this rule so it will prefer filesort over 
indexed ORDER BY only if no LIMIT.

into  mysql.com:/home/hf/work/30286/my51-30286

into  dl145s.mysql.com:/data0/mhansson/bug30942/my51-bug30942

into  mysql.com:/home/hf/work/30286/my51-30286

into  mysql.com:/home/hf/work/30286/my50-30286

into  mysql.com:/home/hf/work/30286/my41-30286

into  mysql.com:/home/hf/work/30286/my51-30286

into  mysql.com:/home/hf/work/30286/my50-30286

into  mysql.com:/home/hf/work/30286/my51-30286

into  mysql.com:/home/hf/work/30286/my41-30286

into  mysql.com:/home/hf/work/30286/my50-30286

into  mysql.com:/home/hf/work/30286/my51-30286

into  mysql.com:/home/hf/work/30286/my51-30286

into  mysql.com:/home/hf/work/30286/my50-30286

As the result of DOUBLE claculations can be bigger
than DBL_MAX constant we use in code, we shouldn't use this constatn
as a biggest possible value.
Particularly the rtree_pick_key function set 'min_area= DBL_MAX' relying
that any rtree_area_increase result will be less so we return valid
key. Though in rtree_area_increase function we calculate the area
of the rectangle, so the result can be 'inf' if the rectangle is
huge enough, which is bigger than DBL_MAX.

Code of the rtree_pick_key modified so we always return a valid key.

into  mysql.com:/home/hf/work/26527/my51-26527

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

into  dl145s.mysql.com:/data0/mhansson/bug30942/my51-bug30942

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

into  dl145s.mysql.com:/data0/mhansson/bug30942/my51-bug30942

added check for hidden I_S tables for 'show columns|keys' commands

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

into  linux-st28.site:/home/martin/mysql/src/bug30942/my51-bug30942

The function str_to_date has a field to say whether it's invoked constant 
arguments. But this member was not initialized, causing the function to
think that it could use a cache of the format type when said cache was in 
fact not initialized.
Fixed by initializing the field to false.

  Post-merge fix.

into  gleb.loc:/home/uchum/work/bk/5.1-opt

end-of-line check missed in Gis_read_stream::get_next_word,
what can lead to crashes (expecially with NULL strings).

End-of-line check added

into  gleb.loc:/home/uchum/work/bk/5.0-opt

  Bug #31077: post-commit fix.

into  gleb.loc:/home/uchum/work/bk/5.0-opt

  Bug #31077: post-commit fix.

into  gleb.loc:/home/uchum/work/bk/5.0-opt

into  magare.gmz:/home/kgeorge/mysql/autopush/B28702-vg-5.0-opt