osx:
* Updated formal credits.rtf file to new years (but currently is unused)
* Added a custom About panel, which alternates between AUTHORS and COPYING
* Removed help menu item to COPYING.pdf and removed COPYING.pdf
* Updated formal Info.plist version
* Added long-due LLVM license notice.

git-svn-id: http://mancubus.net/svn/hosted/eternity/trunk@2815 86ba831e-150c-0410-ab35-e06eaae15ed9
osx: disabled Xcode "unused function" and "unused variable" warnings

git-svn-id: http://mancubus.net/svn/hosted/eternity/trunk@2816 86ba831e-150c-0410-ab35-e06eaae15ed9
osx: cleaned up frontend code

git-svn-id: http://mancubus.net/svn/hosted/eternity/trunk@2817 86ba831e-150c-0410-ab35-e06eaae15ed9
osx: updated hard-coded credits a bit.

git-svn-id: http://mancubus.net/svn/hosted/eternity/trunk@2818 86ba831e-150c-0410-ab35-e06eaae15ed9