The relay log may not be open for some reason (e.g. disk error) after rotation,
and using it causes the slave crash.

Fix: check we have it open before access, return error otherwise.

bug #25104

into  qualinost.(none):/home/mtaylor/src/mysql-4.1-maint

into  kpdesk.mysql.com:/home/thek/dev/mysql-4.1-maint

- Result file was not properly committed.
- Update result file to match the new test case.

into  kpdesk.mysql.com:/home/thek/dev/mysql-4.1-maint

into  naruto.:C:/cpp/mysql-4.1-maint

into  kpdesk.mysql.com:/home/thek/dev/mysql-4.1-maint

- When this bug was corrected it changed the behavior 
  for data/index directory in the myisam test case.
- This patch moves the OS depending tests to a non-windows
  test file.

into  mysql.com:/usr/home/ram/work/bug22377/my41-bug22377

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

into  naruto.:C:/cpp/mysql-4.1-maint

    - test* targets are identical (as much as possible) to 5.0 & 5.1 versions
    - use @PERL@ ./mysql-test-run.pl, instead of depending on /usr/bin/perl location
    - PHONY: target includes all test targets

 - Use "mysql_field_count" to determine if there is a need to
   call "mysql_store_result"

 - Thanks to Vasil Dimov for the patch!

- Using DATA/INDEX DIRECTORY option on Windows put data/index file into
  default directory because the OS doesn't support readlink().
- The procedure for changing data/index file directory is 
  different under Windows.
- With this fix we report a warning if DATA/INDEX option is used,
  but OS doesn't support readlink().

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

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

into  rolltop.ignatz42.dyndns.org:/mnt/storeage/mysql-4.1-maint

- Comment Cleanup.

into  rolltop.ignatz42.dyndns.org:/mnt/storeage/mysql-4.1-maint

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

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

 - Add CR_CONN_HOST_ERROR to list of errorcode that trigger another connection
   attempt in mysqltest

into  example.com:/work/bug24395-v2/my41

into  kahlann.erinye.com:/home/df/mysql/build/mysql-4.1-build

into  dl145s.mysql.com:/data0/bk/team_tree_merge/MERGE/mysql-4.1-opt

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