Automaticly disable ma_test_recovery if not compiled with debugging. This fixes that make test works in Maria.
Fixed wrong merge of ma_init.c from 5.1
Portability fixes:
- Use my_chmod() instead of my_chmod()
- Use my_access() instead of my_stat() to test if file exists
- Don't test result value of pthread_mutex_lock() and pthread_mutex_unlock() as this is not portable
- No reason to test if file exists before we delete it



include/my_sys.h:
  Added my_chmod
include/mysys_err.h:
  Added error for my_chmod
mysys/Makefile.am:
  Added my_chmod
mysys/errors.c:
  Added error for my_chmod
mysys/my_init.c:
  Syncronize with 5.1 to fix setting of QueryPerformanceFrequency()
storage/maria/ma_test1.c:
  Changed short option of --skip-delete and --skip-update to be more logical
storage/maria/ma_test_recovery.expected:
  Updated results after adding more tests
storage/maria/ma_test_recovery:
  Abort test nicely if we are runnning without debugging
  Added more tests
  Changed temporary file names so that one can run maria_chk on them
  Removed some old comments
storage/maria/maria_read_log.c:
  Added note if maria_read_log will not be able to create byte-to-byte identical tables compared to normal execution
storage/maria/unittest/ma_pagecache_consist.c:
  Removed wrong setting of buff that caused memory overwrite
  Use my_chmod() instead of chmod()
  Don't test result value of pthread_mutex_lock() and pthread_mutex_unlock() as this is not portable
storage/maria/unittest/ma_pagecache_single.c:
  Use my_chmod() instead of chmod()
  Don't test result value of pthread_mutex_lock() and pthread_mutex_unlock() as this is not portable
storage/maria/unittest/ma_test_loghandler_first_lsn-t.c:
  No reason to test if file exists before we delete it
storage/maria/unittest/ma_test_loghandler_multithread-t.c:
  Don't test result value of pthread_mutex_lock() and pthread_mutex_unlock() as this is not portable
storage/maria/unittest/ma_test_loghandler_noflush-t.c:
  No reason to test if file exists before we delete it
storage/maria/unittest/ma_test_loghandler_nologs-t.c:
  Use my_access() instead of my_stat() to test if file exists
storage/maria/unittest/ma_test_loghandler_pagecache-t.c:
  No reason to test if file exists before we delete it
  chmod -> my_chmod
mysys/my_chmod.c:
  Added wrapper for chmod()