pre-Antipodes Staging Merge: "Inferno" build options go away, INF_BUILD settings now "default" settings.
Fixed and made consistent across all projects the Build Output names ("Debug" used for Debug builds at the very end of the file name before the extension and after other options such as SSE, where applicable)
Other unused #defines or #ifdefs removed: DEMO build Related, STANDALONE_ONLY_BUILD (already covered by -standalone command line flag)

git-svn-id: svn://svn.icculus.org/fs2open/trunk/fs2_open@9549 387891d4-d844-0410-90c0-e4c51a9137d3