commitmonitor Code

Fix a few /analyze and cppcheck warnings.
(Fixes issue #398) : Cppcheck and /analyze results

Remove the "using namespace std" statements and explicitly refer to the std namespace where needed.

Fetch the selection mark in case the notification was for a de-selection.
(Fixes issue #395) : Wrong behavior when selecting multiple revisions

use consistently an empty line between functions

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