#5860 "Multi-table UPDATE does not activate update triggers"
 #6812 "Triggers are not activated for INSERT ... SELECT"
 #8755 "Trigger is not activated by LOAD DATA".
This patch also implements proper handling of triggers for special forms
of insert like REPLACE or INSERT ... ON DUPLICATE KEY UPDATE. 
Also now we don't call after trigger in case when we have failed to
inserted/update or delete row. Trigger failure should stop statement
execution.

I have not properly tested handling of errors which happen inside of
triggers in this patch, since it is simplier to do this once we will be
able to access tables from triggers.

select, gis & gis-tree tests fails at the moment, but
I will push this CS because it was tested before and I'm absolutely
sure it's right.

into mysql.com:/media/sda1/mysql/mysql-5.0-9478

(crash on attempt to re-execute a statement with an open cursor) + 
post-review fixes.

  Fixed bug #8528.
  Representation for single-table views was made similar to
  representation for multi-table views.
view.test:
  Added test case for bug #8528.
view.result:
  Added test case for bug #8528. Fixed other test cases.

into quadita2.mysql.com:/nfstmp1/guilhem/mysql-5.0-4ita

into mysql.com:/home/gluh/MySQL/Devel/mysql-5.0

  additional fix after review

comment change (post-review of "replication of triggers"). Btw date_formats segfaults with --ps-protocol - not caused by my changes though; I'll file a bug report.

into quadita2.mysql.com:/nfstmp1/guilhem/mysql-5.0-4ita

into ibmlab.site:/home/my/bk/mysql-5.0

into quadita2.mysql.com:/nfstmp1/guilhem/mysql-5.0-4ita

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

into neptunus.(none):/home/msvensson/mysql/mysql-4.1

another column gets rotten value.

into mysql.com:/home/psergey/mysql-4.1-bug10095

into mysql.com:/home/hf/work/mysql-5.0.clean

into mysql.com:/home/hf/work/mysql-4.1.ssj

into neptunus.(none):/home/msvensson/mysql/mysql-4.1

into mysql.com:/home/jonas/src/mysql-5.0

into mysql.com:/home/gluh/MySQL/Bugs/5.0.9404

into mysql.com:/home/gluh/MySQL/Bugs/5.0.9404

into mysql.com:/home/gluh/MySQL/Bugs/5.0.9404

  Bumped up version number to indicate 4.1.12 was branched off

with multi-byte strings, length() instead
of numchars() where used in a mistake.

into mysql.com:/home/jonas/src/mysql-4.1

into mysql.com:/home/jonas/src/mysql-5.0