17:06 ade 

Autotools cleanup.  Remove autoconf257 (259), automake17 (18), and
libtool14 (13/15).

PR:             67768
Submitted by:   ade
Approved by:    4-exp bento runs (thanks, kris!)

01:45 ade 

Use the cosmetic BUILD_VERSION variable (a la libtool), switch portnames
away from using the version number twice.

Unbreak autoconf257, based on work from Rui Lopes <rui@ruilopes.com>