commitmonitor Code

Construct the diff url from the repository root.
(Fixes issue #383) : Diff on one-file-revision fails due to invalid SVN path

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<>.

Fix compiler warnings for the x64 build.

(Fixes issue #373) : Ctrl+Insert (copy) highlights all before copying text

Make CM work properly as an x64 build.
Note: the saved data is not compatible between win32 and x64 versions, therefore we store it in different files.
(Closes issue #301) : Add support x64

* 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

(Closes issue #370) : last checked text suggestion

Update the current selected project if there are new entries, even if they're ignored but shown.
(Fixes issue #368) : log window issue with ignored authors

In case a selection in the tree view is invalid because of recalculated data, pass the url of the selected project to the refresh function so the previously selected tree item can be selected again.

After re-writing the data, make sure nothing is selected before refreshing the tree view.
(Fixes issue #365) : Crash when after modifying the ignore users