We also require vala 0.9.4 now, because of this change.

These virtual methods provide the opportunity for a command to monitor external
events and start themselves automatically.

This signal is designed to be used as part of commands that are designed to
automatically run themselves. The could, for example, be used for things like
automatic refreshing and other automated tasks.

Get rid of the dialog mutex hacks in SvnCommand and replace them with a GCond.
Not only was the old way not very consistend, it was also a dirty hack. This
method is more reliable and a lot cleaner.

Fixes bgo 623751

It uses AnjutaLauncher and GRegex now. There are still some small things to polish but it
already works quite well.

This reverts commit e80ab9f6.

Use the integrated checkboxes in the list and fix all wizard files to
use the new format. Also remove the deprecated gnome-applet wizard.