commitmonitor Code

Update version info for update-checker.

Tag the 1.6.0 release

Bump the version number to 1.6.0

Closes issue #91
* add error number parameter to CUrlInfo class
* when an error happens, save the error number
* before checking a repository, check the last error number and prevent the check if the error was SVN_ERR_RA_NOT_AUTHORIZED until the user cleared the error

Fixes issue #123
* add boolean state to the CUrlInfo class
* add context menu for the tree control to enable/disable monitoring
* show a gray icon if the project is not currently active (i.e., monitored)
* skip checking the project if it's not monitored

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.

Clean up formatting of build scripts.

Sign all binaries from the build script.

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.