tx0.c: Modernized cpu core.  [Wilbert Pol]

Out of whatsnew:
Also copied over the support for octal in
debugger state from the alto2 branch.
Removed legacy code in netlist and separated out 74153 and 74107(A). [Couriersud]
peplus.c: Minor corrections - NW
Fix for pkgnsh and pkgnshdx black screen (nw)
Possible fix for downtownj crashing during regression tests. Next regression test will tell. (nw)
superfx.c: Modernized cpu core.  [Wilbert Pol]
Truco-Tron: Reversed and documented almost all PCB's ICs [Roberto Fresca]
Added a "-u" (for unix) flag to srcclean to produce unix-style endings. [Couriersud]
Created default NVRAMs for Soccer New and Mongolfier New. This allow both games to boot and be playable. 


New games added or promoted from NOT_WORKING status
---------------------------------------------------
Mongolfier New (Italian) [Roberto Fresca, Peter Ferrie]
Soccer New (Italian) [Roberto Fresca, Peter Ferrie]
copypaste issue...
(MESS) fp6000 : fixed random crash after 11th star (nw)