Update libtool to 1.3.3 and modify it's behaviour a bit.  It now
    behaves like a stock libtool unless we start sending one of three
    flags:
    --disable-ltlibs	Don't install .la files
    --release-suffix	Add the release to the end of all the libs (like
			GLib/GTK+)
    --release-ignore	Don't add the release to any libs.