bzr push into mysql-trunk branch (vasil.dimov:3380 to 3381)

[vasil.dimov]

 3381 Vasil Dimov	2011-08-17
      Blind attempt to fix BUG 12881278 - MAIN.MYISAM TEST FAILS ON LINUX
      
      The printed text is truncated on char 63:
      
        "MySQL thread id 1236, OS thread handle 0x7ff187b96700, query id"
      
      still I do not understand how this truncation could have caused the
      main.myisam failure but anyway - the buffer needs to be increased.

    modified:
      sql/sql_class.cc
 3380 Georgi Kodinov	2011-08-17
      Bug #11746029: 22615: MYSQL SERVER INCORRECTLY CATOGORIZES THE LOST+FOUND DIRECTORY AS A DATABA
      
      Implemented an --ignore-db-dir option that takes a valid file name or an empty string.
      You can specify multiple options.
      When a non-empty string is specified it's added as a directory name to the list of directories to ignore 
      when executing SHOW commands and filling in INFORMATION_SCHEMA tables.
      When an empty string is specified as an argument the list is reset to empty.
      Note that the above list of ignored directories doesn't affect other SQL commands like e.g. USE or SELECT etc.
      Added a read-only global @@ignore_db_dirs system variable that will contain the current list in effect.
      
      In addition to the list above the server will always ignore the directories starting with a dot (.). This is safe 
      because since mysql-5.1 a name of a database directory can't start with a dot (.) thanks to the fact that we
      encode database and table names.
      
      Added a test case.
      Fixed the affected test cases.
      Fixed the memory handling when converting the directories array to a hash fails for some reason.

    added:
      mysql-test/suite/sys_vars/r/ignore_db_dirs_basic.result
      mysql-test/suite/sys_vars/t/ignore_db_dirs_basic-master.opt
      mysql-test/suite/sys_vars/t/ignore_db_dirs_basic.test
    modified:
      mysql-test/r/mysqld--help-notwin.result
      mysql-test/r/mysqld--help-win.result
      sql/mysqld.cc
      sql/mysqld.h
      sql/sql_show.cc
      sql/sql_show.h
      sql/sys_vars.cc
=== modified file 'sql/sql_class.cc'
--- a/sql/sql_class.cc	revid:georgi.kodinov@stripped
+++ b/sql/sql_class.cc	revid:vasil.dimov@stripped
@@ -666,7 +666,7 @@ char *thd_security_context(THD *thd, cha
 {
   String str(buffer, length, &my_charset_latin1);
   const Security_context *sctx= &thd->main_security_ctx;
-  char header[64];
+  char header[256];
   int len;
   /*
     The pointers thd->query and thd->proc_info might change since they are

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