gvfs: fix build

Error message was:
| In file included from gvfsfusedaemon.c:44:0:
| /home/andreas/tmp/oe-core-eglibc/sysroots/overo/usr/include/glib-2.0/glib/gurifuncs.h:24:2: error: #error "Only <glib.h> can be included directly."

Signed-off-by: Andreas Müller <schnitzeltony@googlemail.com>
Signed-off-by: Koen Kooi <koen@dominion.thruhere.net>