Revert "gvfs: update to version 1.4.0"

This reverts commit f49ef854.

The new gvfs version needs libglib2 >= 2.21.2, but newer libglib2 versions
need ipv6 support and possibly cause other problems, so simply revert the
gvfs bump for now.

Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>