libuser is a generated directory

Signed-off-by: NJuan Quintela <quintela@redhat.com>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

.gitignore

@@ -6,6 +6,7 @@ i386
 *-bsd-user
 libhw32
 libhw64
+libuser
 qemu-doc.html
 qemu-tech.html
 qemu-doc.info