Need git gitk perl and subversion-perl packages
and download Error.pm into the .../cygwin/lib/perl5/site_perl/5.10/ directory
Reference - http://soi.kd6.us/2008/10/07/so-i-installed-git-and-git-svn-on-cygwin/
May also need to run "ash rebaseall" from the cygwin/bin/ directory
Reference - http://rip747.wordpress.com/2008/09/04/getting-git-svn-to-work-under-cygwin/
