Allow building with bison 3

PR:		ports/194680


git-svn-id: svn+ssh://svn.freebsd.org/ports/head@372045 35697150-7ecd-e111-bb59-0022644237b5
Update to alpha-20141026


git-svn-id: svn+ssh://svn.freebsd.org/ports/head@372046 35697150-7ecd-e111-bb59-0022644237b5
Update to alpha-20141030


git-svn-id: svn+ssh://svn.freebsd.org/ports/head@372047 35697150-7ecd-e111-bb59-0022644237b5