Place Roms in subdirectories of this directory named with game name.

e.g. put the roms for puckman in a subdirectory called puckman.

supported romsets are:
 *    puckman
 *    puckmana
 *    puckmanf
 *    pacman
 *    pacmanf
 *    puckmod
 *    pacmod
 *    hangly
 *    hangly2
 *    hangly3
 *    newpuckx

They should correspond to the latest MAME sets.