[PATCH] NLS: Allow user to select 1:1 mapping

This allows user to select 'default' encoding, which has defined mapping
for each of 255 byte values, so one can use it as a fallback when it
finds filesystem with unknown encoding (EBCDIC for example) just to get
characters through filesystem.

				Petr Vandrovec

fs/nls/nls_base.c

@@ -20,7 +20,8 @@
 #endif
 #include <linux/spinlock.h>
 
-static struct nls_table *tables;
+static struct nls_table default_table;
+static struct nls_table *tables = &default_table;
 static spinlock_t nls_lock = SPIN_LOCK_UNLOCKED;
 
 /*