Fix for gradius3 crash from Fabio (nw)

git-svn-id: svn://dspnet.fr/mame/trunk@31159 749742ba-7341-0410-aadc-df50b521781e
c64.c: MCFG_M6502_DISABLE_DIRECT() for ~3% speedup [Alex Jackson]

git-svn-id: svn://dspnet.fr/mame/trunk@31160 749742ba-7341-0410-aadc-df50b521781e
m6502: put back get_cycle() since OG says it'll be needed in future, but compile-time disable the slow precalculation/caching (nw)

git-svn-id: svn://dspnet.fr/mame/trunk@31161 749742ba-7341-0410-aadc-df50b521781e
add M6502_DISABLE_DIRECT() to the rest of the commodore 8bit drivers too (nw)

git-svn-id: svn://dspnet.fr/mame/trunk@31162 749742ba-7341-0410-aadc-df50b521781e
address some ng save state concerns (nw)

git-svn-id: svn://dspnet.fr/mame/trunk@31163 749742ba-7341-0410-aadc-df50b521781e
Fixed kotmh in mess. (nw)

git-svn-id: svn://dspnet.fr/mame/trunk@31164 749742ba-7341-0410-aadc-df50b521781e
vconv: map /O3 to /Ox (nw)

git-svn-id: svn://dspnet.fr/mame/trunk@31165 749742ba-7341-0410-aadc-df50b521781e
final rev of these bootlegs turned up (nw)

git-svn-id: svn://dspnet.fr/mame/trunk@31166 749742ba-7341-0410-aadc-df50b521781e
improved exception reporting in cli_frontend (nw)

git-svn-id: svn://dspnet.fr/mame/trunk@31167 749742ba-7341-0410-aadc-df50b521781e
first batch of passing attotime as const reference instead of copy - where possible (nw)

git-svn-id: svn://dspnet.fr/mame/trunk@31168 749742ba-7341-0410-aadc-df50b521781e