-# Makefile.am need only be changed on a major version number
-# change (e.g. libpng12 --> libpng13). In that case seach
-# this file for every instance of the old base name (libpng12)
-# and change to the new one (libpng13), then change the
-# -version-number settings below so that the new values have
-# the correct major part (first field).