Item_func_geometry_from_text::val_str() should set null_value
in case of wrong data.

into  mysql.com:/home/ram/work/b26038/b26038.5.0

Having maybe_null flag unset for geometry/spatial functions leads to
wrong Item_func_isnull::val_int()'s results.
Fix: set maybe_null flag and add is_null() methods.

into  pilot.blaudden:/home/msvensson/mysql/mysql-5.0-maint

into  neptunus.(none):/home/msvensson/mysql/mysql-5.0-maint

into  neptunus.(none):/home/msvensson/mysql/bug10777/my50-bug10777

into  calliope.local.cmiller:/Volumes/Source/src/mysql-5.0-maint

into  pilot.mysql.com:/home/msvensson/mysql/mysql-5.0-maint

into  zippy.cornsilk.net:/home/cmiller/work/mysql/mysql-5.0-maint

into  pilot.mysql.com:/home/msvensson/mysql/mysql-5.0-maint

 - Implement --secure-file-priv=<dir> option that limits
  "load_file", "LOAD DATA" and "SELECT .. INTO OUTFILE" to work 
  with files in specified dir.
 - Use above option for mysqld in mysql-test-run.pl 

into  pilot.mysql.com:/home/msvensson/mysql/mysql-5.0-maint

into  bk-internal.mysql.com:/data0/bk/mysql-5.0-opt

Showstopper and regression against 5.0.24.

Previously, we ignored seek() errors (see Bug#22828) and let seek()s
against pipes fail.  Now, since we check that a seek didn't fail,
and return without reading, this bug popped up.

This restores the behavior for file-ish objects that could never be 
seek()ed.

into  pilot.mysql.com:/home/msvensson/mysql/mysql-5.0-maint

into  pilot.mysql.com:/home/msvensson/mysql/mysql-5.0-maint

to be expanded in same cases 

into  zippy.cornsilk.net:/home/cmiller/work/mysql/mysql-5.0-maint

into  pilot.mysql.com:/home/msvensson/mysql/mysql-5.0-maint

into  pilot.mysql.com:/home/msvensson/mysql/mysql-5.0-maint

into  olga.mysql.com:/home/igor/dev-opt/mysql-5.0-opt-bug26209

into  mysql.com:/home/hf/work/25492/my50-25492

into  mysql.com:/home/hf/work/25492/my50-25492

into  mysql.com:/home/hf/work/25492/my50-25492

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

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

 Common symbols with and without initialization
 cause the apple linker to exclude then from the
 list of global symbols.

into  mysql.com:/home/tnurnberg/24660/50-24660

into  mysql.com:/home/tnurnberg/24660/41-24660

into  mysql.com:/home/tnurnberg/24660/50-24660

ENUMs weren't allowed to have character 0xff, a perfectly good character in some locales.
This was circumvented by mapping 0xff in ENUMs to ',', thereby prevent actual commas from
being used. Now if 0xff makes an appearance, we find a character not used in the enum and
use that as a separator. If no such character exists, we throw an error.

Any solution would have broken some sort of existing behaviour. This solution should
serve both fractions (those with 0xff and those with ',' in their enums), but
WILL REQUIRE A DUMP/RESTORE CYCLE FROM THOSE WITH 0xff IN THEIR ENUMS. :-/
That is, mysqldump with their current server, and restore when upgrading to one with
this patch.

The crash happens because second filling of the same I_S table happens in
case of subselect with order by. table->sort.io_cache previously allocated
in create_sort_index() is deleted during second filling
(function get_schema_tables_result). There are two places where
I_S table can be filled: JOIN::exec and create_sort_index().
To fix the bug we should check if the table was already filled
in one of these places and skip processing of the table in second.

Some fields (GEOMETRY first of all) can't be handled properly in this
case at all. So we return an error in this case

into  olga.mysql.com:/home/igor/dev-opt/mysql-5.0-opt-bug26159

The function make_unireg_sortorder ignored the fact that any
view field is represented by a 'ref' object.
This could lead to wrong results for the queries containing
both GROUP BY and ORDER BY clauses.