[darwinbuild-dev] Xcode 4.2 and Lion support

Okay folks, here we go! Rumor has it that hardly anyone uses DarwinBuild anymore, but just-in-case anyone here is interested in seeing it work with Lion and Xcode 4.2, check out ticket #128 on the DarwinBuild website's Trac ticket tracker. Attached is a quick-and-dirty patch that should get it mostly working...