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.

textproc: remove 'Created by' lines

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

  *  "Choe, Cheng-Dae" whitekid
  *  -
  *  <glewis@FreeBSD.org>
  *  <koshy@india.hp.com>
  *  Aaron Dalton <aaron@FreeBSD.org>
  *  Aaron Dalton <aaron@daltons.ca>
  *  Aaron Straup Cope
  *  Aaron Straup Cope <ascope@cpan.org>
  *  Ache
  *  Adam Herzog <adam@herzogdesigns.com>
  *  Adam Weinberger <adamw@FreeBSD.org>

Remove # $FreeBSD$ from Makefiles.

Return knu@'s ports to the pool after his commit bit was safekept.

Convert to UCL & cleanup pkg-message (categories [t-u])

textproc/ruby-rd-mode.el: Do not install files for xemacs

It was removed in 2014.

textproc/ruby-rd-mode.el: Define RUBY_ELISPDIR locally

Convert tab after WWW: in pkg-descrs to single space as per PHB

Approved by:	portmgr blanket

Remove ${PORTSDIR}/ from dependencies, categories r, s, t, and u.

With hat:	portmgr
Sponsored by:	Absolight

Cleanup plist

Remove indefinite articles and trailing periods from COMMENT, plus
minor COMMENT typos and surrounding whitespace fixes. A few Makefiles
where not included as they contain Latin-1 characters that break
the Phabricator workflow. Categories T-V.

CR:		D509
Approved by:	portmgr (antoine)

Support stage

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

Update to 0.6.38 and create a missing RUBY_ELISPDIR.

- Fix all cases of 'No newline at end of file' in ports tree

Approved by: portmgr (bapt)

Fix build dependency line

Feature safe:	yes

Add WWW.

Update to 0.6.31 and unbreak with Ruby 1.9.

PR:             ports/163846
Submitted by:   Shin-ya Murakami <murashin@gfd-dennou.org>

- Mark as broken with Ruby 1.9

Approved by:    portmgr

Try to clean up xemacs directories

Update to 0.6.20.

With portmgr hat on, reset maintainership of knu's ports since he has
been inactive more than 6 months.  We hope to see him back sometime.

Update to 0.6.16.

De-pkg-comment.

cd dir && command -> cd dir; command

Put dummy files in the empty directories so they are surely packed.    

Now XEMACSLISPDIR and RUBY_ELISPDIR are taken care of by   lang/ruby{,-devel}.  
 

Add ruby-rd-mode.el, separated from textproc/ruby-rdtool, an Emacs   lisp module
for editing RD files.