Honour ships' "no lighting" flag in the techroom (from Axem)

git-svn-id: svn://svn.icculus.org/fs2open/trunk/fs2_open@10162 387891d4-d844-0410-90c0-e4c51a9137d3
Ensure compliance with the usual form of test in the FS2_Open codebase for running in Debug mode

git-svn-id: svn://svn.icculus.org/fs2open/trunk/fs2_open@10164 387891d4-d844-0410-90c0-e4c51a9137d3