cramfs: mark as obsolete

Who needs cramfs when you have squashfs? At least, we should warn people
that cramfs is obsolete.

Signed-off-by: Michael Opdenacker <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

MAINTAINERS

···
 
 CRAMFS FILESYSTEM
 W:	http://sourceforge.net/projects/cramfs/
-S:	Orphan
+S:	Orphan / Obsolete
 F:	Documentation/filesystems/cramfs.txt
 F:	fs/cramfs/
 

fs/cramfs/Kconfig

···
 config CRAMFS
-	tristate "Compressed ROM file system support (cramfs)"
+	tristate "Compressed ROM file system support (cramfs) (OBSOLETE)"
 	depends on BLOCK
 	select ZLIB_INFLATE
 	help
···
 	  To compile this as a module, choose M here: the module will be called
 	  cramfs.  Note that the root file system (the one containing the
 	  directory /) cannot be compiled as a module.
+
+	  This filesystem is obsoleted by SquashFS, which is much better
+	  in terms of performance and features.
 
 	  If unsure, say N.