[CIFS] rename cifs_strndup to cifs_strndup_from_ucs

In most cases, cifs_strndup is converting from Unicode (UCS2 / UTF-32) to
the configured local code page for the Linux mount (usually UTF8), so
Jeff suggested that to make it more clear that cifs_strndup is doing
a conversion not just memory allocation and copy, rename the function
to including "from_ucs" (ie Unicode)

Signed-off-by: Steve French <sfrench@us.ibm.com>
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 7e5d4fd..39f5362 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -1,7 +1,7 @@
 /*
  *   fs/cifs/connect.c
  *
- *   Copyright (C) International Business Machines  Corp., 2002,2008
+ *   Copyright (C) International Business Machines  Corp., 2002,2009
  *   Author(s): Steve French (sfrench@us.ibm.com)
  *
  *   This library is free software; you can redistribute it and/or modify
@@ -3463,7 +3463,8 @@
 		strncpy(tcon->treeName, tree, MAX_TREE_SIZE);
 
 		/* mostly informational -- no need to fail on error here */
-		tcon->nativeFileSystem = cifs_strndup(bcc_ptr, bytes_left,
+		tcon->nativeFileSystem = cifs_strndup_from_ucs(bcc_ptr,
+						      bytes_left,
 						      smb_buffer->Flags2 &
 							 SMBFLG2_UNICODE,
 						      nls_codepage);