Automake versions (was: Patch to make libgcj work with autoreconf again)

[DJ Delorie]

> Thanks Tom for pointing this out. We have to all keep these
> autotools versions synced: it bugs everybody to have extraneous
> differences in trees due to version mis-match.

Could we modify the CVS commit filters to *require* the right
versions?  If it detects a commit with the wrong version (at least,
assuming the old rev had the right version), it can just reject it.