I18n: Update translation en_AU (100%).

217 translated messages.

Transifex (https://www.transifex.com/projects/p/xfce/).
I18n: Update translation th (100%).

217 translated messages.

Transifex (https://www.transifex.com/projects/p/xfce/).
I18n: Update translation es (100%).

217 translated messages.

Transifex (https://www.transifex.com/projects/p/xfce/).
I18n: Add new translation te (50%).

109 translated messages, 108 untranslated messages.

Transifex (https://www.transifex.com/projects/p/xfce/).
I18n: Update translation nl (100%).

217 translated messages.

Transifex (https://www.transifex.com/projects/p/xfce/).
I18n: Update translation ja (100%).

217 translated messages.

Transifex (https://www.transifex.com/projects/p/xfce/).
I18n: Update translation pl (100%).

217 translated messages.

Transifex (https://www.transifex.com/projects/p/xfce/).
I18n: Update translation ast (85%).

186 translated messages, 31 untranslated messages.

Transifex (https://www.transifex.com/projects/p/xfce/).
Add support for logind suspend/resume (Bug 9963)

This patch does runtime checks to see if we can use logind for
suspend/resume same as poweroff/reboot. There's still full support
for ConsoleKit.
Update min requirements and autotools

Update autotools, fix whitespace issue, change how the version
string is presented with make distcheck, fix --disable-dpms so
it will actually compile, and update the minimum versions for
the 4.12 roadmap.