Goodbye PowerPC, you can always be resurrected when the time comes
Get rid of PowerPC from the MSVC project files as well
Trivial IR implementation (extract instructions into a block, then compile out of that).

Has issues with replacements.
JIT IR: Skip already-compiled delay slots more elegantly than "-1". Solve the ReplaceJalTo problem.
Jit IR: Fix mac build, update ARM code too (untested)
Debug build buildfix on mac (not very pretty)
JIT IR: Some more work on IR processing
Jit IR: Make it possible to show IR blocks in the jit viewer
Get rid of the "compiling" flag.
Follow plain jumps in the IR extractor

Disassembly gets confused though, that needs fixing (together with proxy blocks)
Aggressively inline across jal / jr ra. Will need limiting heuristics to prevent code bloat...
Undelete an accidentally deleted optimization (immbranch)
Add way to print some block bloat stats. Disable block joining for now.
Play around with shuffling around load/store instructions.

Should let us get much better use out of LDMIA/STMIA on ARM.
Correct instruction counting, minor prep
Add a trivial optimization
Fix IR on ARM