fuse: added patch to make this build on newer kernels.

srcpkgs/fuse/patches/fusermount.patch

@@ -0,0 +1,12 @@
+CLONE_NEWNS is only defined for __USE_GNU.
+
+--- util/fusermount.c.orig	2011-06-27 17:41:08.845498441 +0200
++++ util/fusermount.c	2011-06-27 17:42:31.236498493 +0200
+@@ -26,6 +26,7 @@
+ #include <sys/fsuid.h>
+ #include <sys/socket.h>
+ #include <sys/utsname.h>
++#define __USE_GNU
+ #include <sched.h>
+ 
+ #define FUSE_COMMFD_ENV		"_FUSE_COMMFD"