Release stuff

[David Edelsohn]

	I committed the AIX/Darwin code as target-specific.  Moving it to
the branch would be great.  The patch did not fix a regression, but is
localized and target-specific.  I did not want to move it to the branch
without some comment / input.

	I know that the code does not handle 64-bit AIX yet, but getting
32-bit AIX to work would be an excellent start.  I do not think libgcj
will work on AIX until the NO_DOLLAR_IN_LABEL issue is resolved.

Thanks, David