Mk/**tex.mk: Convert bsd.tex.mk to USES=tex

- Update all the consumers to use USES=tex
- USE_TEX=yes is the old way of writing USES=tex which has been removed
  and replaced in all ports
- Almost all of the USE_TEX features remains unchanged
- Some consumers had the same variables defined both in the mk
  infrastructure and also in the ports which have been removed from the
  ports as those are redundant.

In case any of the consumers are failing to build please make sure that
the nexessary USES=tex is there. Unlike previous USE_TEX=yes will no
longer load the required VARS for tex and related dependencies.

Reviewed by:	portmgr
Approved by:	portmgr (blanket)

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.

tex* : Update version 20150521=>20210325

- Update MASTER_SITES_TEX_CTAN from https://tug.org/historic/
- Update texlua to use texlua53 library
- Deprecate CSLaTeX format
- Remove aleph as per Upstream
- Add common variables TEXLIVE_YEAR and TEXLIVE_VERSION to be used in
  all ports related to tex*
- Fix dependency of print/texlive-texmf-source [1]
- devel/tex-kpathsea: Update version 6.2.1=>6.3.3
- devel/tex-libtexlua: Update version 5.2.4=>5.3.6
- devel/tex-libtexluajit: Update version 2.0.3=>2.1.0
- devel/tex-synctex: Update version 1.17.0=>2.0.0
- devel/tex-web2c: Update version 20150521=>20210325
- editors/texworks: Fix build with newer tex version

print/texlive-full: Remove CPE information for metaport

print/texlive-full: Add CPE information

Approved by:	portmgr (blanket)

print/texlive-full: Update maintainer from freebsd-tex@ to tex@

PR:		257601
Approved by:	tcberner (mentor)

print/texlive-full: Update maintainership of TeX Live universe ports

- Give the maintainership of the TeX-live related ports to the FreeBSD
  TeX group [1].

[1] https://wiki.freebsd.org/tex

Approved by:	hrs

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

Remove # $FreeBSD$ from Makefiles.

Remove NLS, DOCS, EXAMPLES and IPV6 from OPTIONS_DEFAULT, they are enabled by
default anyway and don't need to be listed

Approved by:	portmgr blanket

Update TeXLive to TL2015.

- print/texlive-infra was renamed with print/texlive-tlmgr.
  Note that currently tlmgr(1) does not work because of
  lack of TLPDB.  This will be fixed.

- Lua libraries used in LuaTeX are separated into
  devel/tex-libtexlua and devel/texlibtexluajit.
  USE_TEX supports them via keywords "texlua" and "texluajit".

- libsynctex is currently installed by devel/tex-web2c.
  This will be separated into a single port.

- Add graphics/libpotrace and use installed libpotrace
  and libharfbuzz.

Split print/texlive-texmf into two ports, texlive-texmf and
texlive-texmf-source.

PR:	193202

- Add capability to specify package dependency in USE_TEX.
- Make print/texlive-full always depend on the latest packages; currently
  texmf>=20140525_2 and base>=20140525_1.

Update TeXLive to 2014.

- Note that full support of configuration tools such as tlmgr and texconfig
  is not ready yet.

- Most of dviware now supports libpaper to choose the default papersize.
  Use paperconfig(8) utility or print/papersize-default-* packages.

- Some quite old macros of the age of latex209 have been removed, and
  there are user-visible/invisible incompatibilities.  Please send a report
  to freebsd-tex@FreeBSD.org or file a PR if you have trouble.

Support stage

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

- Fix duplicated pkg-plist entries.
- Split off documentation to print/texlive-docs from print/texlive-texmf.
  The document part was 1.3GB (30k files).  Now the size of texlive-texmf
  package is 557MB (this was 1.5GB before the split).
- do-texhash, do-fmtutil, do-updmap targets now run after post-install.

Mark USE_TEX=texlive in TeXLive-specific ports.

Use USE_TEX=full.

TeXLive mega commit.  The following ports have been added:

  * Meta port
   - print/texlive-full: meta port to install all of the TeXLive components

  * Libraries
   - devel/tex-kpathsea: kpathsea library
   - devel/tex-web2c: WEB2C toolchain and TeX engines
   - print/tex-ptexenc: character code conversion library for pTeX

  * Base part of the TeXLive
   - print/texlive-base: binary programs in TeXLive
   - print/texlive-texmf: macro and font data in TeXLive
   - print/texlive-infra: tlmgr dependency (Perl modules)