gnu: emacs-auctex: Use new style.

* gnu/packages/emacs-xyz.scm (emacs-auctex)[arguments]<#:phases>: Use
SEARCH-INPUT-FILE.  Remove trailing #T.
[inputs]: Remove labels.

gnu: emacs-ag: Use new style.

* gnu/packages/emacs-xyz.scm (emacs-ag)[arguments]<#:phases>: Remove trailing
[propagated-inputs]: Remove labels.

gnu: emacs-emms: Use new style.

* gnu/packages/emacs-xyz.scm (emacs-emms)[arguments]<#:phases>: Use
SEARCH-INPUT-FILE.  Remove trailing #T.
[inputs]: Remove labels.

gnu: fontmanager: Use libsoup2 and vala-0.52

These changes fix the build.

* gnu/packages/fontutils.scm (fontmanager)[native-inputs]: Replace vala
with vala-0.52.
[inputs]: Replace libsoup with libsoup-minimal-2. Replace webkitgtk with
webkitgtk-with-libsoup2.

Signed-off-by: Leo Famulari <leo@famulari.name>

news: Add 'de' translation.

* etc/news.scm: Add German translation of package inputs entry.

gnu: emacs-emms-print-metadata: Use new style.

* gnu/packages/emacs-xyz.scm (emacs-emms-print-metadata)[arguments]<#:phases>:
Remove trailing #T.
[inputs]: Remove label.

gnu: emacs-wget: Use new package style.

* gnu/packages/emacs-xyz.scm (emacs-wget)[native-inputs]: Remove label.
[arguments]<#:phases>: Use SEARCH-INPUT-FILE.  Remove trailing #T.

gnu: Add r-maftools.

* gnu/packages/bioconductor.scm (r-maftools): New variable.

gnu: Add r-tcgabiolinks.

* gnu/packages/bioconductor.scm (r-tcgabiolinks): New variable.

gnu: Add r-tcgabiolinksgui-data.

* gnu/packages/bioconductor.scm (r-tcgabiolinksgui-data): New variable.

doc: Mention powerpc-linux support.

This was missing with the addition of powerpc-linux support in commit
cbdb7d4fea928febc105985c03b8fb5d6eda3d27.

* doc/guix.texi (GNU Distribution): Add powerpc-linux.

doc: Mark mips64el-linux as unsupported.

* doc/guix.texi (GNU Distribution): Change mips64el-linux from
deprecated to unsupported.

build: Adjust 'courage level' of different systems.

* m4/guix.m4 (GUIX_ASSERT_SUPPORTED_SYSTEM): Add i586-gnu. Move
powerpc-linux to unsupported but not needing courage. Add mips64el-linux
to unsupported.

build-system: emacs: Do not rely on input labels in the 'build' phase.

This commit repairs the Emacs build system for packages using the new
label-less "guix style".  Tested with emacs-libgit.

* guix/build/emacs-build-system.scm (build): Use search-input-file to locate
emacs.

gnu: icecat-source: Enable xz parallel compression.

* gnu/packages/gnuzilla.scm (icecat-source): Set XZ_DEFAULTS to
%xz-parallel-args to enable parallel compression and hasten the build.  Remove
trailing #t.

guix: Fix typo in last commit.

* guix/build/emacs-build-system.scm (make-autoloads): Fix typo.

guix: Do not assume "emacs" label in make-autoloads.

* guix/build/emacs-build-system.scm (make-autoloads): Look for "emacs"
executable independently on the label.

news: Add 'de' translation.

* etc/news.scm: Add German translation of static networking entry.

gnu: texlive-fira: Update hash.

* gnu/packages/tex.scm (texlive-fira): Update hash.

gnu: texlive-latex-textpos: Update hash.

* gnu/packages/tex.scm (texlive-latex-textpos): Update hash.