Initial implementation of PhysFS-based file support
PhysFS support is entirely inside VectorStorm engine, now.

Client code no longer needs to know about it at all.
GetFullFilename() now uses PhysFS.
Remove old commented-out code.
vsFile::ReadLine() works on Win32 again

Line-ending issues.
Adjust data directory on Win32.

While in development, the exe is commonly located in a 'Debug' or 'Release'
directory hanging off the project directory, and the data is never copied into
there.  This code checks whether that's the case, and if so, tells PhysFS to
look for the Data directory one level outside the executable's location.
Game now provides company name and title name.

So not everyone needs to claim to be VectorStorm.  :)
Merge branch 'physfs'