Revert "The mfcleakfix lib is no longer used."

This reverts commit 6daa58229e352b8056640f7c283df6a76f373b25.

HoverCAD (and currently MazeCompiler) still use MFC, so we still need this fix.
Copy mfcleakfix DLL in Debug build.
Apply mfcleakfix.

Just to make clear, the "leak fix" is not fixing an actual leak, it's
fixing the false report of a leak.
Ignore *.trk files in hovercad dir.

These are the result of testing the compile feature.
Fix crash on invalid command-line params.