Fix minor merge "oopsie"

into  recycle.(none):/src/bug25621/my50-bug25621

- On Windows, connection handlers while exiting properly did not 
decrement the server's thread count.

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

Fix "make distcheck"

so the WEXITSTATUS macro can "fiddle" with it as it so pleases
 

to check if the creation of mysql_upgrade_info suceeded.
Instead use 'upgrade_already_done' to check that file was
created properly.

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

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

into  blade09.mysql.com:/tmp/mmj/mysql-5.0-runtime

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

into  weblab.(none):/home/marcsql/TREE/mysql-5.0-rt-merge

into  qualinost.(none):/home/mtaylor/src/mysql/mysql-5.0-debian

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

into  gshchepa.loc:/home/uchum/work/bk-trees/mysql-5.0-opt-27704

into  gshchepa.loc:/home/uchum/work/bk-trees/mysql-5.0-opt-27704

Support for NULL components was incomplete for row comparison,
fixed.  Added support for abort_on_null at compare_row() like
in 5.x

into  magare.gmz:/home/kgeorge/mysql/autopush/B27786-5.0-opt

This bug was intruduced by the fix for bug#17212 (in 4.1). It is not 
ok to call test_if_skip_sort_order since this function will 
alter the execution plan. By contract it is not ok to call 
test_if_skip_sort_order in this context.

This bug appears only in the case when the optimizer has chosen 
an index for accessing a particular table but finds a covering 
index that enables it to skip ORDER BY. This happens in 
test_if_skip_sort_order.

into  romeo.(none):/home/bk/merge-mysql-5.0

into  romeo.(none):/home/bkroot/mysql-5.0-rpl

into  whalegate.ndb.mysql.com:/home/tomas/mysql-5.0-maint

When merging views into the enclosing statement
the ORDER BY clause of the view is merged to the
parent's ORDER BY clause.
However when the VIEW is merged into an UNION
branch the ORDER BY should be ignored. 
Use of ORDER BY for individual SELECT statements
implies nothing about the order in which the rows
appear in the final result because UNION by default
produces unordered set of rows.
Fixed by ignoring the ORDER BY clause from the merge
view when expanded in an UNION branch.

  Left a stray space in. 

  Renamed libmysqlclient package entires 

  Rename: debian/libmysqlclientSLIB.README.Debian.in -> debian/libmysqlclientSLIBoff.README.Debian.in
libmysqlclientSLIBoff.docs.in:
  Rename: debian/libmysqlclientSLIB.docs.in -> debian/libmysqlclientSLIBoff.docs.in
control.in:
  Renamed packages back to libmysqlclientSLIBoff to match current packages. 
  We can rename this in a sensible way later on. 
libmysqlclientSLIBoff.files.in:
  Rename: debian/libmysqlclientSLIB.files.in -> debian/libmysqlclientSLIBoff.files.in
libmysqlclientSLIBoff.dirs.in:
  Rename: debian/libmysqlclientSLIB.dirs.in -> debian/libmysqlclientSLIBoff.dirs.in
libmysqlclientSLIBoff.postinst.in:
  Rename: debian/libmysqlclientSLIB.postinst.in -> debian/libmysqlclientSLIBoff.postinst.in

  Fix test case: add drop table

  Protect the control file from running ./configure again

	errno

Vasil Dimov (at Oracle) noted that pthread_key_create() does not
set errno, so if it fails then we return the wrong error code.

Instead, capture the return value, which is the real error value, 
and instead report that.