commitmonitor Code

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

* 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

Replace the deprecated svn API calls with the non-deprecated functions.

Rename a lot of classes and methods.

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

convert tabs to spaces.

(Closes issue #237) : Diff options

code cleanup:
* rename CRegStdWORD to CRegStdDWORD
* replace the stdstring defing with a typedef for tstring
* get rid of the wide_string typedef, use std::wstring instead

(Closes issue #143): Looking for ssl-client-cert-file support...

Pass the passphrase entered in the url-to-monitor dialog to the svn lib when asked for a passphrase for a cert-file.

Indicate the GPL license.