Mk/**ruby.mk: Switch from USE_RUBY=yes to USES=ruby

Switch from Mk/bsd.ruby.mk to Mk/Uses/ruby.mk

Notable changes are.

- Mk/bsd.ruby.mk is moved to Mk/Uses/ruby.mk.
- USE_RUBY=yes is replaced with USES=ruby.
- USE_RUBY_EXTCONF is replaced with USES=ruby:extconf.
- USE_RUBY_RDOC is replaced with USES=ruby:rdoc.
- USE_RUBY_SETUP is replaces with USES=ruby:setup.
- RUBY_NO_BUILD_DEPENDS and RUBY_NO_RUN_DEPENDS are replaced with
  USES=ruby:{build,none,run}.
- RUBY_REQUIRE isn't used anywhere, so removed.
- USES=gem now implies USES=ruby.

This is mainly the work of yasu@ at https://reviews.freebsd.org/D27863

I have just made some cosmetic changes and ran exp-run to test that the
tree is not in a BROKEN state.

Approved by:	portmgr
Differential Revision:	https://reviews.freebsd.org/D37925

Remove WWW entries moved into port Makefiles

Commit b7f05445c00f has added WWW entries to port Makefiles based on
WWW: lines in pkg-descr files.

This commit removes the WWW: lines of moved-over URLs from these
pkg-descr files.

Approved by:		portmgr (tcberner)

Add WWW entries to port Makefiles

It has been common practice to have one or more URLs at the end of the
ports' pkg-descr files, one per line and prefixed with "WWW:". These
URLs should point at a project website or other relevant resources.

Access to these URLs required processing of the pkg-descr files, and
they have often become stale over time. If more than one such URL was
present in a pkg-descr file, only the first one was tarnsfered into
the port INDEX, but for many ports only the last line did contain the
port specific URL to further information.

There have been several proposals to make a project URL available as
a macro in the ports' Makefiles, over time.

www: remove 'Created by' lines

A big Thank You to the original contributors of these ports:

  *
  *  <hvo.pm@xs4all.nl>
  *  Aaron Dalton <aaron@FreeBSD.org>
  *  Aaron Dalton <aaron@daltons.ca>
  *  Aaron LI <aly@aaronly.me>
  *  Aaron Zauner <az_mail@gmx.at>
  *  Abel Chow <achow@transoft.net>
  *  Adam Weinberger <adamw@FreeBSD.org>
  *  Ade Lovett <ade@FreeBSD.org>
  *  Adrian Steinmann <ast@marabu.ch>
  *  Akinori MUSHA aka knu <knu@idaemons.org>

Remove # $FreeBSD$ from Makefiles.

Cosmetic change

Cleanup no longer needed CHMOD usage after r424898.

PR:		213743
Submitted by:	mat
Exp-run by:	antoine
Sponsored by:	Absolight

Convert USES=gem:autoplist to USES=gem since autoplist is default

create USES=gem and update rubygem- ports to use it

Note that for now ports still have to have USE_RUBY=yes to use USES=gem

PR:		209041
Differential Revision:	https://reviews.freebsd.org/D6070

- Remove RG link

- Remove blank line between NO_ARCH and USE_RUBY

Set NO_ARCH for remaining rubygem-* ports with no arch dependent files

Obtained from:  DEVELOPER_MODE
With Hat:       ruby@

Sponsored by:   RideCharge Inc / Curb

Make usable by non root users

See also:	https://github.com/fizx/robots/issues/6

- Add LICENSE

- Support STAGEDIR

Add NO_STAGE all over the place in preparation for the staging support (cat:
www)

- Add RG link to pkg-descr

- Cleanup Makefile header

- Remove leading indefinite article from COMMENT

- One WWW line in pkg-descr will do just fine

- Point at the homepage consistently as defined by rubygems.org

- Take maintainership
- Add RG to WWW

Feature safe:   yes

- Reassign these ports back to the heap

Feature safe:   yes

- Update to 0.10.1

PR:             ports/158276
Submited by:    pgollucci

- Get Rid MD5 support

- github is redirecting all these to https now

Updated to version 0.10.0

Approved by:    itetcu (mentor, implicit)

Updated to version 0.90

PR:             ports/147542
Submitted by:   pgollucci
Approved by:    itetcu (mentor, implicit)
Feature safe:   yes

- No need to mess with FETCH_ARGS anymore.
  rubygems.org (RG) doesn't do redirects.

With Hat:   ruby@

Updated to use the RG macro

PR:             ports/147021
Approved by:    itetcu (mentor, implicit)
Submitted by:   pgollucci

New port: Robots is a simple Ruby library to parse robots.txt files.

WWW: http://github.com/fizx/robots

Approved by:    itetcu (mentor)