Fixup and improve VGA240.EXE.
- Determine actual resident size instead of guessing (use MCB prior to PSP segment)
- Fix resident detection so it actually works
- Fix installation phase not to clear the screen. Instead, preserve video mode and contents and then force 60Hz
- Fix INT 10h hooked message to explain itself better
- Allow uninstall from memory using /UNINSTALL switch
- danooct1's audience can stop freaking out about the "INT 10h hooked" message :)