peplus.c: Minor clean up - NW
mcs51.c: Initialize all serial state and added serial state to the save state (nw)
-Added decryption support for Music Ball [Andreas Naive]

New games added or promoted from NOT_WORKING status
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Music Ball [Andreas Naive]
midway tms340-based drivers: adjust initial screen sizes so aviwrite will work better (nw)
speedbal.c: Give Music Ball it's own correct Bonus dipswitch settings. Add dipswitch locations to Speed Ball & Music Ball. [Brian Troha]
tasman.c: hooked up k053246/k055673 registers; object ROM tests pass now [Alex Jackson]
g627: fixed rota_115 and rota_101
by6803: fixed typo
by17, by35: slight improvement in display
Merge git://git.redump.net/mame