libtool 2.4.3

Update to latest stable release, use HTTPS on homepage and mirror,
remove obsolete patch.
libtool: install libtoolize with 'g' prefix
libtool: replace patch with upstream fix

Apply upstream fix to Makefile.am and resultant changes to Makefile.in,
disable parallel installation to avoid race condition.
libtool: update 2.4.3 bottle.