Acept *.pak enhancement

[Luis46coco]

The .pak cartridges have a header and a foot with information, which can easily be recognized and accepted, they are no longer used much, but it is easy to make them not block and run well, less problems for the new coco initiates.

.pak only serve for emulators in ms-dos, but it's easy to accept them.

Some time ago I made a converter

PRINT "Program for convert Color Computer Cartridge V.1.00 01/2011"
PRINT "By Luis Fernandez luis46coco@hotmail.com"
PRINT "MS-DOS convert filenames to 8.3 and uppercase"
PRINT
PRINT "Use COCOPAK *.PAK *.CCC"
PRINT " or COCOPAK *.CCC *.PAK"
PRINT
PRINT "CCC to PAK"
PRINT " Add at first, 2 Bytes int len(arch) and 2 Bytes int &hC000"
PRINT " and at end, 33 bytes 0 (cero) and 2 Bytes int &hC000"
PRINT
PRINT "PAK to CCC"
PRINT " delete 4 bytes at first and 35 bytes at end"
END