Only show revision in the About box if the shift key is help down in release builds.
Only show revision in the About box if the shift key is help down in release builds.

git-svn-id: c806da28ca781a1e2f2d0b1fde2a9d9a144b325a@146 295070fd-a27b-da4f-a32e-77c6a882a0e3

Andrew-Phillips/HexEdit,AndrewWPhillips/HexEdit,Andrew-Phillips/HexEdit,Andrew-Phillips/HexEdit,AndrewWPhillips/HexEdit,AndrewWPhillips/HexEdit