Register objects are `equal' if they have the same fields and the values
of all of those fields are equal. Overload Register.__eq__ to reflect
this.

Change-Id: I680e869470b20d6dc88d4bd78da9f002980aea4f

The Register class supports single-bit field definitions. Add a doctest
for example purposes and regression testing.

Change-Id: Ib04762aca8cb00256e16c29ac2ab71d47d0c06da

The Register class currently can't handle setting the `value'
attribute. Fix this. Also add a `zero' convenience method for zeroing
out a register.

After adding the following doctest:

    >>> abc.value = 0
    >>> abc.value
    0

but before fixing __setattr__, I get:

    **********************************************************************
    File "register.py", line 42, in __main__.Register
    Failed example:
        abc.value = 0
    Exception raised:
        Traceback (most recent call last):
          File "/usr/lib/python2.7/doctest.py", line 1289, in __run
            compileflags, 1) in test.globs
          File "<doctest __main__.Register[10]>", line 1, in <module>
            abc.value = 0
          File "register.py", line 106, in __setattr__
            raise AttributeError
        AttributeError
    **********************************************************************
    File "register.py", line 43, in __main__.Register
    Failed example:
        abc.value
    Expected:
        0
    Got:
        49
    **********************************************************************
    1 items had failures:
       2 of  20 in __main__.Register
    ***Test Failed*** 2 failures.

After the fix in __setattr__, all tests pass successfully.

Change-Id: I6d39261b139aae0def58f38a4291baad651b10e3

register.py is almost ready to handle doctest testing. Fix up one typo
and add the necessary call in if __name__ == "__main__".

Change-Id: I0a79060bb3bb58e807e7699ec0c21ef0eddb062d

If a Register is created with a None value, it currently blows up. Fix
this.

Change-Id: Ic652620e367c64e0a8444ef4b3e5ea7d77edcd82

After a crash, ramdumps may be collected for analysis. The ram
parser is a tool to aid in analysis of these dumps. The script
extracts useful information from the dumps to help with debugging.
Please see the README for full details.

Change-Id: I7795686a96bbfe246edf47d09e3f616131688429