IonPower progress report

Remember: comparing the G5 optimized PPCBC Baseline-only compiler against the unoptimized test version of IonPower on V8!

% /Applications/TenFourFoxG5.app/Contents/MacOS/js --no-ion -f run.js
Richards: 203
DeltaBlue: 582
Crypto: 358
RayTrace: 584
EarleyBoyer: 595
RegExp: 616
Splay: 969
NavierStokes: 432
----
Score (version 7): 498

% ../../../../mozilla-36t/obj-ff-dbg/dist/bin/js -f run.js
Richards: 337
DeltaBlue: 948
Crypto: 1083
RayTrace: 913
EarleyBoyer: 350
RegExp: 259
Splay: 584
NavierStokes: 3262
----
Score (version 7): 695

I've got one failing test case left to go (the other is not expected to pass because it assumes a little-endian memory alignment)! We're almost to the TenFourFox 38 port!