- Update to 1.31 [1]

While here:

- Add makeinfo and readline uses
- Fix plist orphans

PR:		194079 [1]
Submitted by:	Kevin Thompson <antiduh at csh.rit.edu>
Approved by:	maintainer timeout


git-svn-id: svn+ssh://svn.freebsd.org/ports/head@372019 35697150-7ecd-e111-bb59-0022644237b5