Made some sample programs compilable
Merge remote-tracking branch 'origin/master'

Conflicts:
	samples/wx/ImageViewer.hs
Added Show instances for Prop and Attr, updated instance documentation
Introduce new names for border constants
Corrected Haddocked comments
bitmapButton now displays the image properly; solved assert failure in bitmapToggleButton

See bug ticket 74 for the bitmapButton problem.
bitmapToggleButton triggered an assert failure, nullBitmap cannot be used,
therefore bitmapToggleButton now creates a bitmap with a single pixel.
Make wxHaskell compile with wxGTK.

Interestingly, it looks like a special case for wxGTK was breaking wxHaskell on wxGTK...
Copy shared library to destination folder in copyHook instead of installHook.
Initial Debianization attempt.
Merge remote-tracking branch 'upstream/master'
Fix library resolving and build environment leakage.