gnu: ruby: Remove string-append call with single argument.

* gnu/packages/ruby.scm (ruby)[source]: Remove string-append.

gnu: tinyxml: Fix typo in description.

* gnu/packages/xml.scm (tinyxml)[description]: Fix typo.

services: nginx: Actually check if configuration is valid.

* gnu/services/web.scm (nginx-activation): Fix path to nginx binary.

gnu: linux-libre: Add support for cross-compilation.

* gnu/packages/linux.scm (linux-libre): Add support for
  cross-compilation.

gnu: linux-libre: Move kernel configuration to configure phase.

* gnu/packages/linux.scm (linux-libre)[arguments]: Add configure phase.

gnu: linux-libre: Apply %boot-logo patch in origin.

* gnu/packages/linux.scm (linux-libre)[origin]: Apply %boot-logo patch
  in origin.

gnu: linux-libre: Use system->architecture.

* gnu/packages/linux.scm (linux-libre): Use system->architecture.

gnu: linux-libre: Use modify-phases.

* gnu/packages/linux.scm (linux-libre): Use modify-phases.

gnu: module-init-tools: Prevent line wrapping.

* gnu/packages/linux.scm (module-init-tools): Break line.

gnu: Add schismtracker.

* gnu/packages/music.scm (schismtracker): New variable.

gnu: guile-wm: Add '.desktop' file.

* gnu/packages/guile-wm.scm (guile-wm)[arguments]: Add
'install-xsession' phase.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>

gnu: Add seqtk.

* gnu/packages/bioinformatics.scm (seqtk): New variable.

gnu: libbluray: Enable libaacs and libbdplus support.

* gnu/packages/video.scm (libbluray) [inputs]: Add libaacs and
libbdplus.
[arguments]: Add 'fix-dlopen-paths' to #:phases.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>

gnu: Add libaacs.

* gnu/packages/video.scm (libaacs): New variable.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>

gnu: Add libbdplus.

* gnu/packages/video.scm (libbdplus): New variable.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>

gnu: dlib: Disable failing tests.

* gnu/packages/machine-learning.scm (dlib)[arguments]: Add phase
'disable-failing-tests' for tests that are known not to work in the current
release.
[inputs]: Add lapack.

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

gnu: dlib: Do not build dlib twice for tests.

* gnu/packages/machine-learning.scm (dlib)[arguments]: Use makefile
instead of cmake in check phase to prevent full rebuild.

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

gnu: dlib: Remove unused fftw from inputs.

* gnu/packages/machine-learning.scm (dlib)[inputs]: Remove fftw.
(define-module): Don't include algebra.scm.

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

gnu: python-py3status: Update to 3.1.

* gnu/packages/python.scm (python-py3status): Update to 3.1.

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

gnu: youtube-dl: Update to 2016.09.11.1.

* gnu/packages/video.scm (youtube-dl): Update to 2016.09.11.1.