Merge pull request #55 from infirit/master

Fixes and cleanups
Remove distro folder.
Merge pull request #56 from flexiondotorg/master

Remove distro folder.
Merge pull request #58 from infirit/master

Add Middle Click Emulation to mouse manager
Bump minimum mate-desktop required version
Sync translations with transifex
xrandr: Fix gdk_spawn_command_line_on_screen usage with GTK3
keyboard: Fix GTK3 support
Fix typo in previous commit
Bump version to 1.7.1
Include autogen.sh in tarball
housekeeping: Cherry pick some fixes from gnome-settings-daemon
keybindings: Fix GTK3 support
keybindings: Fix GTK3 support

Together with previous commit, it closes https://github.com/mate-desktop/mate-settings-daemon/issues/53
Add manpage

Closes https://github.com/mate-desktop/mate-settings-daemon/issues/60
Sync translations with transifex
configure: Add check-news
Update NEWS
Bump version to 1.7.90
gtk3: fix media keys