Fix for PR/6552

[Richard Kenner]

    Did you run a full bootstrap together with the testsuite?  On which
    platform?

No, because it affects only Ada and only the platform on which the bug
was shown, which I don't have.  It has been in a GCC 3.2-based local tree
for months running on lots of targets.

    Please add:
            PR/6552
    > 	* function.c (struct epi_info): New field const_equiv.

    here if this is really for that PR.

Sorry, that was done in the commit, though not in this message.

    > + static void update_epilogue_consts PARAMS ((rtx, rtx, void *));

    Please do not introduce again PARAMS, we just got rid of them.

Likewise.