commitmonitor Code

(Closes issue #189) : Snarl notification
* register CM with snarl
* register three different notification classes

(Fixes issue #196) : Show Diff not working
* before using TSVN to show the diff, check the version of the TortoiseProc.exe and only use it if its version is 1.5 or higher.

Fixes issue #147:
Check for the process name to be CommitMonitorLocal.exe, and if it is (instead of the default CommitMonitor.exe), save/load all data in the same directory as the application exe file is instead of %APPDATA%\CommitMonitor.

* Tell SASL where to find the plugin dlls on startup.

This adds to issue #82: include the sasl dlls in the installer

Add helper function to split a string into a vector.

Add function which returns the installation path of TortoiseSVN.
The 32-bit version is preferred, but if it is not installed, the x64 version of TSVN is used instead if that one is installed.

This is the first step to resolve issue #80.

Add helper method to escape an URL.

Before using the project name in a path, convert all special chars.
This fixes issue #35.

Indicate the GPL license.

Add static method to get a path string to a temporary file.