added a new compare greater test (int_gt; CMP)

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/assembler.py (try)