Hi Zack - all the changes look fine to me. I added you to the automake group on savannah. Barring anyone else jumping in to the contrary, please go ahead and commit/push. Thanks for all the work.
It looks you (re)sent the "use warnings" instead of "-w" patch. I believe I already applied that one, if it hasn't changed. (I didn't check all the files it touches.) It seems like some of these changes imply small changes to the manual(s) -- automake.texi, and presumably autoconf.texi too. If you're up for drafting a patch for that, it would be great, but I understand if you have too many other things on your plate! Thanks again, Karl