Makefile

Subject: [PATCHES] AIX make patch resubmitted.

Misc patches for AIX from Darren:

1)  New src/makefiles/Makefile.aix  This patch should only be
    applied if the following patch (4) is applied to backend/Makefile!
    Still looking into having configure determine the last line to do
    the shared link.  The 325 code will work for 41, so I put that in
    as the default.  Included a commented out 41 line for completeness.

*and*

4)  Patch the backend Makefile.  I've reviewed this patch with respect to the
    other ports that use MAKE_EXPORTS (svr4 and univel) as closely as I could
    and I don't see where it will break them.  If it does, please let me know
    and I'll rework it somehow.