closes[t:2682] make the tokudb_debug mysql sys var writeable

git-svn-id: file:///svn/mysql/tokudb-engine/tokudb-engine@20870 c7de825b-a66e-492c-adef-691d508d4ae1

storage/tokudb/hatoku_hton.cc

@@ -1189,7 +1189,7 @@ static MYSQL_SYSVAR_ULONGLONG(cache_size, tokudb_cache_size, PLUGIN_VAR_READONLY
 
 static MYSQL_SYSVAR_ULONG(max_lock, tokudb_max_lock, PLUGIN_VAR_READONLY, "TokuDB Max Locks", NULL, NULL, 64 * 1024, 0, ~0L, 0);
 
-static MYSQL_SYSVAR_ULONG(debug, tokudb_debug, PLUGIN_VAR_READONLY, "TokuDB Debug", NULL, NULL, 0, 0, ~0L, 0);
+static MYSQL_SYSVAR_ULONG(debug, tokudb_debug, 0, "TokuDB Debug", NULL, NULL, 0, 0, ~0L, 0);
 
 static MYSQL_SYSVAR_STR(log_dir, tokudb_log_dir, PLUGIN_VAR_READONLY, "TokuDB Log Directory", NULL, NULL, NULL);
 
@@ -1203,6 +1203,7 @@ static MYSQL_SYSVAR_UINT(checkpointing_period, tokudb_checkpointing_period, 0, "
 static MYSQL_SYSVAR_UINT(write_status_frequency, tokudb_write_status_frequency, 0, "TokuDB frequency that show processlist updates status of writes", NULL, NULL, 1000, 0, ~0L, 0);
 static MYSQL_SYSVAR_UINT(read_status_frequency, tokudb_read_status_frequency, 0, "TokuDB frequency that show processlist updates status of reads", NULL, NULL, 10000, 0, ~0L, 0);
 static MYSQL_SYSVAR_INT(fs_reserve_percent, tokudb_fs_reserve_percent, PLUGIN_VAR_READONLY, "TokuDB file system space reserve (percent free required)", NULL, NULL, 5, 0, 100, 0);
+
 #if 0
 
 static MYSQL_SYSVAR_ULONG(cache_parts, tokudb_cache_parts, PLUGIN_VAR_READONLY, "Sets TokuDB set_cache_parts", NULL, NULL, 0, 0, ~0L, 0);
@@ -1230,6 +1231,7 @@ static MYSQL_SYSVAR_ULONG(region_size, tokudb_region_size, PLUGIN_VAR_READONLY,
 static MYSQL_SYSVAR_BOOL(shared_data, tokudb_shared_data, PLUGIN_VAR_READONLY, "Tokudb Shared Data", NULL, NULL, FALSE);
 
 static MYSQL_SYSVAR_STR(tmpdir, tokudb_tmpdir, PLUGIN_VAR_READONLY, "Tokudb Tmp Dir", NULL, NULL, NULL);
+
 #endif
 
 static struct st_mysql_sys_var *tokudb_system_variables[] = {
@@ -1273,7 +1275,7 @@ mysql_declare_plugin(tokudb) {
     PLUGIN_LICENSE_GPL,
     tokudb_init_func,          /* plugin init */
     tokudb_done_func,          /* plugin deinit */
-    0x0210,                    /* 2.1.0 */
+    0x0400,                    /* 4.0.0 */
     NULL,                      /* status variables */
     tokudb_system_variables,   /* system variables */
     NULL                       /* config options */