Also, fixed some crashiness in the can-execute tests for hints.
If you crash an a can-execute method you get a really unhelpful
failure message. Asserts don't work there either. Yay WPF.
Mostly a straight copy & paste of the files. The only significant
change was to move the localizable strings from Properties/Resources
(RESX) to Res/Strings.xaml (Resource Dictionary). I expect a
number of strings will no longer be needed, since WPF lets you put
more of the UI/UX logic into the design side.
I also renamed the namespace to SourceGenWPF, and put the app icon
into the Res directory so it can be a resource rather than a loose
file. I'm merging the "Setup" directory contents into the main app
since there wasn't a whole lot going on there.
The WPF Color class lacks conversions to/from a 32-bit integer, so
I added those.
None of the stuff is wired up yet.
