Run "autoreconf" (from autoconf-2.57) to rebuild:
aclocal.m4 config.h.in configure
This appears to be a cleaner solution than hand-hacking/merging
changes to **/Makefile.in after each import.
Recently suggested by a couple of people, and confirmed with Ben Elliston.
autoconf if make determines that any of the files are out of date.
Unfortunately, this can occur quite easily after a cvs update, and
will then fail on systems without any of those tools or with read-only
source, and thus generate lots of "it doesn't build" email and bug
reports. If/when we have a better solution in tree, this is how we fix it.