Another long patch to remove the rest of the OS2 support.

include/config-win.h:
  Removing OS2 stuff
include/errmsg.h:
  Removing OS2 stuff
include/m_string.h:
  OS2 removal
include/my_global.h:
  OS2 removal
include/my_net.h:
  OS2 removal
include/my_no_pthread.h:
  OS2 removal
include/my_pthread.h:
  OS2 removal
include/thr_alarm.h:
  OS2 removal
mysys/default.c:
  OS2 removal
mysys/mf_path.c:
  OS2 removal
mysys/mf_tempdir.c:
  OS2 removal
mysys/mf_tempfile.c:
  OS2 removal
mysys/my_access.c:
  OS2 removal
mysys/my_clock.c:
  OS2 removal
mysys/my_copy.c:
  OS2 removal
mysys/my_create.c:
  OS2 removal
mysys/my_dup.c:
  OS2 removal
mysys/my_file.c:
  OS2 removal
mysys/my_getwd.c:
  OS2 removal
mysys/my_init.c:
  OS2 removal
mysys/my_lib.c:
  OS2 removal
mysys/my_lock.c:
  OS2 removal
mysys/my_mkdir.c:
  OS2 removal
mysys/my_open.c:
  OS2 removal
mysys/my_pthread.c:
  OS2 removal
mysys/my_redel.c:
  OS2 removal
mysys/my_sleep.c:
  OS2 removal
mysys/my_static.c:
  OS2 removal
mysys/my_thr_init.c:
  OS2 removal
mysys/thr_alarm.c:
  OS2 removal
storage/myisam/myisamchk.c:
  OS2 removal

storage/myisam/myisamchk.c

@@ -34,10 +34,6 @@ SET_STACK_SIZE(9000)			/* Minimum stack size for program */
 #define my_raid_delete(A,B,C) my_delete(A,B)
 #endif
 
-#ifdef OS2
-#define _sanity(a,b)
-#endif
-
 static uint decode_bits;
 static char **default_argv;
 static const char *load_default_groups[]= { "myisamchk", 0 };
@@ -378,7 +374,7 @@ static void usage(void)
                       directly with '--variable-name=value'.\n\
   -t, --tmpdir=path   Path for temporary files. Multiple paths can be\n\
                       specified, separated by ");
-#if defined( __WIN__) || defined(OS2) || defined(__NETWARE__)
+#if defined( __WIN__) || defined(__NETWARE__)
    printf("semicolon (;)");
 #else
    printf("colon (:)");