redshift-gtk: Fix crash when toggling state using the status icon
Fix #67: Geoclue should pull in Glib as dependency

Add checks in configure.ac for Glib and pull in through Makefile.am when
Geoclue support is enabled.
Fix #66: Do not distribute redshift-gtk, only redshift-gtk.in
Do not segfault just because an error has not been given

Signed-off-by: Mattias Andrée <maandree@operamail.com>
Try to use DISPLAY=:0 if not in X

Signed-off-by: Mattias Andrée <maandree@operamail.com>
Fix line splitting logic.
Update NEWS and configure.ac for 1.9.1 release
Merge release branch for 1.9.1