ARM: Handle bitwise operations with literal Smi for 32bits integers without calling the GenericBinaryOpStub.  Refactored and updated the routine to convert a signed int to a double.  This is a commit of http://codereview.chromium.org/3247008 for Rodolph Perfetta.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5401 ce2b1a6d-e550-0410-aec6-3dcde31c8c00