Merge pull request #69 from reallyenglish/mitsuruy

cherry-pick from the master to update to 6.01
- fix completions installations [1]
- while here explictly name LICENSE_PERMS

PR:		177755
Submitted by:	freebsd@geoffgarside.co.uk [1], fmb@onibox.net (maintainer)
Approved by:	maintainer
Merge pull request #70 from reallyenglish/tomoyukis

- fix completions installations [1]

fixes errors from many cron jobs ".bash_profile: line 15: /usr/local/libexec/../completions/rbenv.bash: No such file or directory"
bump PORTVERSION

because rbenv-0.4.0_1 has been installed on many nodes and pkg_upgrade
re-uses packages cached under /var/ports/packages/All.
Merge pull request #71 from reallyenglish/tomoyukis

bump PORTVERSION
New USES macros that loads "features" on demand.

First feature implemented: pathfix which will lookup in WRKSRC for Makefile.in
and configure and fix common path that doesn't fit with FreeBSD hier(7)

This is an extract of bsd.gnome.mk's gnomehack to avoid porters to have to load
the full bsd.gnome.mk just for this feature

More features to come...
import gettext.mk and bison.mk from the master which are required by sysutils/grub2