This allows to set all four corners separately. The default is
now to have all four corners rounded if radius is > 0 in paintBoxRel.
It also places hard coded integer numbers for CORNER_TOP and
CORNER_BOTTOM with the respective #defines.
This should make it much easier to port over code parts from tuxbox.org.
However, there are probably bugs and oversights in that I did not find
yet. Reports are welcome.
git-svn-id: file:///home/bas/coolstream_public_svn/THIRDPARTY/applications/neutrino-experimental@45 e54a6e83-5905-42d5-8d5c-058d10e6a962
