Added MUL and tests
FIXED IMM32 Problem ( supports now values grather than 255)
Add new Add test for big nums (test is broken)
Add CMP and SETG

Files:
modified: /pypy/branch/oo-jit/pypy/jit/codegen/x86_64/test/test_simple.py (try)
modified: /pypy/branch/oo-jit/pypy/jit/codegen/x86_64/test/test_rgenop.py (try)
modified: /pypy/branch/oo-jit/pypy/jit/codegen/x86_64/rgenop.py (try)
modified: /pypy/branch/oo-jit/pypy/jit/codegen/x86_64/objmodel.py (try)
modified: /pypy/branch/oo-jit/pypy/jit/codegen/x86_64/assembler.py (try)