Fix various filenames in copyright comment.
Put proper header guards for r4300 *.h files
Pure Interpreter has its own header now.
Put cached interpreter into its own module.
Put instruction counters into its own module.
Prefer memset instead of hand-made for loop.
Move TLB to r4300 directory.
Put CP0 into its own module.
Put CP1 into its own module.
Move current_instruction_table to r4300.h
Remove unused prototype.
Move tlb_e to tlb.c
Move op to api/debugger.c
Merge pull request #21 from bsmiles32/r4300_organization

R4300 organization