GFS2: Rename eattr.[ch] as xattr.[ch]

Use the more conventional name for the extended attribute
support code. Update all the places which care.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
diff --git a/fs/gfs2/acl.c b/fs/gfs2/acl.c
index f6777f1..3fc4e3a 100644
--- a/fs/gfs2/acl.c
+++ b/fs/gfs2/acl.c
@@ -19,7 +19,7 @@
 #include "gfs2.h"
 #include "incore.h"
 #include "acl.h"
-#include "eattr.h"
+#include "xattr.h"
 #include "glock.h"
 #include "inode.h"
 #include "meta_io.h"