- medit.dtf is assumed to always be beside mapedit.exe
- assets listed in the desc file being loaded are all assumed to be
beside that same desc file
paths for both the mapedit.exe and desc file are discovered
automatically from the command line arguments received.
this, in my opinion, represents the most intuitive/logical behaviour.
before this change, you would have needed to have copied mapedit.exe
and medit.dtf to the same directory as your map desc file and all the
assets being loaded. kind of icky in my opinion.
Gered