- Update to 3.1.1

ChangeLog: http://mercurial.selenic.com/wiki/WhatsNew#Mercurial_3.1.1_.282014-09-01.29


git-svn-id: svn+ssh://svn.freebsd.org/ports/head@366973 35697150-7ecd-e111-bb59-0022644237b5