[mkgmap-dev] Commit: r1334: Treat MDR .img files separately from regular .img files.

Version 1334 was commited by steve on 2009-10-29 14:22:21 +0000 (Thu, 29 Oct 2009) Treat MDR .img files separately from regular .img files. Fixes a null pointer when creating the tdb file. No other file has been changed to use the the new kind. The gmapsupp does not yet support mdr files, and the new nsis module will use it but currently assumes it is there anyway.