gvfs: bump to 1.16.2

Following the libglib2 bump, gvfs must be updated. We don't bump to
the latest 1.17.1, because it requires libglib2 2.37, and we have only
libglib2 2.36.x at this point.

Fixes:

   http://autobuild.buildroot.net/results/d02/d026f3e697d60a3730f89acab18515eb568c4d0e/build-end.log



Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>