commitmonitor Code

use consistently an empty line between functions

Use smart pointers for allocating memory and fix a few memory leaks while doing so.
Also replace our custom auto_buffer with std::unique_ptr<>.

* add an empty line after the license header
* remove unneeded empty lines at the end of files
* use the right case for the includes
* always use <> for system headers
* update ext/Versions.txt

New function to check whether a window is covered by other windows. The function does this by checking 100 different points of the window.
Update issue #362

patch from XhmikosR:
bump the copyright year, remove unwanted spaces and convert some tabs to spaces.

whitespace change only.

Use delete[] for arrays.

Merge the MultiSCCS branch to trunk and fix some minor merge conflicts.

Hold off showing the notifications until there is now fullscreen app active. Meaning while there's a fullscreen application running, the notifications are not shown.
As soon as the fullscreen app is closed or not in fullscreen anymore, all gathered notifications are shown.

Fixes issue #286

Fix compiler warnings.