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.

One more small cleanup, forgotten yesterday.
Reported by:	lwhsu

Remove # $FreeBSD$ from Makefiles.

Update version requirement of RUN_DEPENDS

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 ${PORTSDIR}/ from dependencies, categories v, w, x, y, and z.

With hat:	portmgr
Sponsored by:	Absolight

- Add LICENSE_FILE

- Add NO_ARCH

- Add LICENSE

www/rubygem-rails4: create port for rails4

This port required creating a number of new ports, old versions of existing
ports and other adjustments, so do all that while here too.

Rails is a web-application framework for the MVC pattern that includes
both a template engine, controller framework, and object-relational
mapping package. Everything needed to develop web-apps that can run on
CGI, FastCGI, and mod_ruby

Being a full-stack framework means that all layers are built to work
seamlessly together. That way you Don't Repeat Yourself (DRY) and you
can use a single language from top to bottom. Everything from templates
to control flow to business logic is written in Ruby - The language of
love for industry heavy-weights.

WWW: http://www.rubyonrails.org

Submitted by:	xmj (based on)

www/rubygem-jquery-turbolinks: update to 2.1.0

www/rubygem-jquery-turbolinks: update to 2.0.2

- Add stage support

A jQuery plugin for drop-in fix binded events problem caused by Turbolinks

WWW: https://github.com/kossnocorp/jquery.turbolinks

PR:		ports/182732
Submitted by:	Loic Blot <loic.blot@unix-experience.fr>