Fixed Bug 11148: Windows installer fails to uninstall old versions since 3.2.9
Fixed Bug 11148: Windows installer fails to uninstall old versions since
3.2.9

Solution is to check
Software\Microsoft\Windows\CurrentVersion\Uninstall instead, which works
for all versions.

git-svn-id: 3948e88432e1a59e1cb2bc472f8f957688004121@9125 67b53d14-2c14-4ace-a08f-0dab2b34000c

ethaneldridge/vassal,ethaneldridge/vassal,ethaneldridge/vassal