commitmonitor Code

Reset system tray icon when the main dialog is closed.
This fixes issue #45.

* Switch to using VS2008 with the MFC feature pack.
* Instead of using boost\regex, use the tr1::regex which is available with the MFC feature pack

Add a ".diff" extension to the unified diff files.
This implements issue #40.

Use the write access to the log data when checking for unread items: the read only items could be out of date.

Before activating the notification and the tray icon animation, check if there are still unread items.
This should fix issue #25.

To avoid treating a repository url as an SVNParentPath url, add some more checks:
* if we already have log entries for the url, just accept the error and skip the SVNParentPath check
* only check for SVNParentPath if the error is either SVN_ERR_RA_DAV_RELOCATED or SVN_ERR_RA_DAV_REQUEST_FAILED - other errors indicate not a permanent problem and therefore indicate that the url still could be a repository url.

When new projects are found via the SVNParentPath URL, also use the "ignore own commits" setting of the parent URL for the child URLs.

Don't mark a repository as having new commits if all the new commits are ignored.

Only count the commits which are not ignored.

When there's only one new commit, show "1 new commit" instead of "1 new commits" in the notification.