The attached patch adds a new method 'disassemble' to the class
gdb.Architecture.  I have not yet added docs and tests, but will do so
after I get feedback that adding such a method is OK.

2013-02-04  Siva Chandra Reddy  <sivachandra@google.com>

        Add a new method 'disassemble' to gdb.Architecture class.
        * Makefile.in: Add entries for the new file python/py-out.c
        * python/py-arch.c (archpy_disassmble): Implementation of the
        new method gdb.Architecture.disassemble.
        (arch_object_methods): Add entry for the new method.
        * python/py-out.c: Implementation of a Python ui_out.
        * python/python-internal.h: Add declarations for new utility
        functions.
        * python/python.c (_initialize_python): Initialize Python
        ui_out.