bzr commit into mysql-5.5-bugfixing branch (chris.powers:3190) Bug#55345

[Christopher Powers]

#At file:///home/cpowers/work/dev/dev-55-bugfixing/mysql/ based on revid:chris.powers@stripped

 3190 Christopher Powers	2010-08-22
      Bug #55345, "mysql_library_init causes segfault if executed after calling mysql_library_end"
      
      my_thread_global_end() now sets mysql_thread_basic_global_init_done= 0
      to ensure destroyed mutexes are not reused.
      
      I verified that clearing this flag will not result in the redundant allocation
      of other resources allocated by my_thread_global_init() and
      my_thread_basic_global_init().
     @ mysys/my_thr_init.c
        Clear mysql_thread_basic_global_init_done flag at the end of my_thread_global_end()

    modified:
      mysys/my_thr_init.c
=== modified file 'mysys/my_thr_init.c'
--- a/mysys/my_thr_init.c	2010-02-13 16:01:32 +0000
+++ b/mysys/my_thr_init.c	2010-08-23 01:41:42 +0000
@@ -302,6 +302,8 @@ void my_thread_global_end(void)
 #ifndef HAVE_GETHOSTBYNAME_R
   mysql_mutex_destroy(&LOCK_gethostbyname_r);
 #endif
+
+  my_thread_basic_global_init_done= 0;
 }
 
 static my_thread_id thread_id= 0;


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