gnu: Add texlive-xmltex.

* gnu/packages/tex.scm (texlive-xmltex): New variable.

gnu: texlive-wasysym: Update synopsis and description.

* gnu/packages/tex.scm (texlive-wasysym)[synopsis]: Refer to the font by
'wasy', not WASY2.
[description]: Likewise.  Use code ornaments for the LaTeX package names.

gnu: Add texlive-wasy.

* gnu/packages/tex.scm (texlive-wasy): New variable.

gnu: texlive-stmaryrd: Actually include the fonts.

* gnu/packages/tex.scm (texlive-stmaryrd): Rewrite package to inherit from a
simple-texlive-template package, so that fonts resources as listed in the
texlive.tlpdb database are retrieved and installed.
[arguments]: Adapt to use with the inherited template.
{chdir}: New phase.

gnu: Add texlive-helvetic.

* gnu/packages/tex.scm (texlive-helvetic): New variable.

gnu: Add texlive-courier.

* gnu/packages/tex.scm (texlive-courier): New variable.

gnu: Add texlive-jknappen.

* gnu/packages/tex.scm (texlive-jknappen): New variable.

gnu: texlive-psnfss: Improve description.

* gnu/packages/tex.scm (texlive-psnfss): Improve description.

gnu: texlive-latex-oberdiek: Rename to texlive-oberdiek.

This is done to match the package name as registered in the texlive.tlpdb
database.

* gnu/packages/tex.scm (texlive-latex-oberdiek): New deprecated package.
(texlive-oberdiek): Renamed from the above.
(texlive-pstool, texlive-latex-geometry)
(texlive-beamer): Adjust to use the renamed package variable.

gnu: texlive-fonts-stmaryrd: Rename to texlive-stmaryrd.

* gnu/packages/tex.scm (texlive-fonts-stmaryrd): Rename to texlive-stmaryrd,
according to the texlive.tlpdb database.  Deprecate old package name.

gnu: texlive-latex-wasysym: Rename to texlive-wasysym.

* gnu/packages/tex.scm (texlive-latex-wasysym): Rename to texlive-wasysym,
according to the texlive.tlpdb database.  Deprecate old package name.

gnu: Add texlive-tipa.

* gnu/packages/tex.scm (texlive-tipa): New variable.

gnu: Add config.

* gnu/packages/autotools.scm (config): New variable.

gnu: Add texlive-marvosym.

* gnu/packages/tex.scm (texlive-marvosym): New variable.

gnu: Add docbook-sgml-3.1.

* gnu/packages/docbook.scm (docbook-sgml-3.1): New variable.

gnu: Add perl-sgmls.

* gnu/packages/perl.scm (perl-sgmls): New variable.

gnu: Add docbook-dsssl.

* gnu/packages/docbook.scm (docbook-dsssl): New variable.

gnu: Add docbook-sgml.

* gnu/packages/docbook.scm (docbook-sgml): New variable.

gnu: Add iso-8879-entities.

* gnu/packages/docbook.scm (iso-8879-entities): New private variable.

gnu: Add openjade.

* gnu/packages/xml.scm (openjade): New variable.