gvfs: bump to version 1.31.4

gvfs: bump to version 1.31.4

Bump to version 1.31.4 which is the first version including the fix for
glibc 2.28 issue with major/minor:
https://gitlab.gnome.org/GNOME/gvfs/commit/3424bef7ef71dc3a8c2c71310671cd6d39e7b3e7

Do not bump to latest version of gvfs as:
- this is a major rework: autotools has been dropped in favor of meson
- it requires libglib in version 2.57.1 and we have currently 2.56.1

Also:
- add hash for license file
- Remove --disable-bash-completion, no more option since 1.31.1:
  https://gitlab.gnome.org/GNOME/gvfs/commit/2f28fa49cfeb1c82927a1c7c0021b15e2742149f
- Remove --disable-hal, dropped since 1.31.1:
  https://gitlab.gnome.org/GNOME/gvfs/commit/ec9c45d7c7671266193a93500c7477990e390fc7

Fixes:
 - http://autobuild.buildroot.net/results/07fa7b0ad9ae0fa9c2e59d54e4d4c76ae4f26166

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>