redshift: 1.10 -> 1.11

Changes:
- Add option preserve for gamma adjustment methods (randr, vidmode,
  quartz, w32gdi) to apply redness on top of current gamma
  correction.
- Fix #158: Add redshift.desktop file to resolve an issue where
  Geoclue2 would not allow redshift to obtain the current location.
- Fix #263: Make sure that the child process is terminated when
  redshift-gtk exits.
- Fix #284: A sample configuation file has been added to the
  distribution tarball.
- Fix warning message in redshift-gtk that is some cases caused
  redshift-gtk to fail (#271)
- Fix #174: Use nanosleep() for sleeping to avoid high CPU load on
  platforms (NetBSD, ...) with limitations in usleep()
- Various updates to man page and translations.