[gtk] (6 commits) Non-fast-forward update to branch issue-2

[Emmanuele Bassi <ebassi src gnome org>]

The branch 'issue-2' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  490899e... x11: Do not include fallback-c89.c
  dca6f84... build: Rename 'disable-modules' option
  5996b5a... build: Rename 'with-included-immodules' option
  8dc6888... build: Rename the 'enable-colord' option
  284a3b2... build: Coalesce print backends options into one
  6ffd23f... build: Rename GDK backend options
  eec4d2c... build: Rename last 'enable' options

Commits added to the branch:

  4b7017e... build: Rename 'disable-modules' option
  d1a8ed0... build: Rename 'with-included-immodules' option
  2e7fef7... build: Rename the 'enable-colord' option
  1440db1... build: Coalesce print backends options into one
  7b32900... build: Rename GDK backend options
  327e7a4... build: Rename last 'enable' options