gnu: brdf-explorer: Use HTTPS source URL.

* gnu/packages/graphics.scm (brdf-explorer)[source]: Use HTTPS URL.

gnu: Use HTTPS URLs for GitHub home-pages.

* gnu/packages/bioinformatics.scm, gnu/packages/emacs.scm,
gnu/packages/haskell.scm, gnu/packages/libffi.scm, gnu/packages/lisp.scm,
gnu/packages/ocaml.scm, gnu/packages/openstack.scm, gnu/packages/python.scm,
gnu/packages/ruby.scm, gnu/packages/shells.scm, gnu/packages/statistics.scm,
gnu/packages/xdisorg.scm: Use HTTPS URLs for all packages with a home-page on
GitHub.

gnu: jbig2dec: Fix CVE-2016-9601.

* gnu/packages/patches/jbig2dec-CVE-2016-9601.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.
* gnu/packages/image.scm (jbig2dec)[source]: Use it.

Merge branch 'core-updates'

gnu: guile-git: Install .go files to /site-ccache.

* gnu/packages/guile.scm (guile-git)[arguments] <bootstrap>: Change
"/ccache" to "/site-ccache" in Makefile.am.

gnu: sddm: Build without greenisland.

This Wayland compositor is currently abandonware and has known problems.

* gnu/packages/display-managers.scm (sddm)[inputs]: Remove GREENISLAND.

gnu: guitarix: Update to 0.35.3.

* gnu/packages/audio.scm (guitarix): Update to 0.35.3.

guix: Compress and decompress xz archives in parallel.

* guix/scripts/pack.scm (%compressors): Add flag '-T0' when calling "xz".
* guix/utils.scm (decompressed-port, compressed-port,
compressed-output-port): Same.

gnu: notmuch: Update to 0.24.1.

* gnu/packages/mail.scm (notmuch, python-notmuch, python2-notmuch): Update to
0.24.1.

Signed-off-by: Marius Bakke <mbakke@fastmail.com>

gnu: khmer: Build with gcc-4.

* gnu/packages/bioinformatics.scm (khmer)[inputs]: Add gcc-4.9.

gnu: ruby: Replace with ruby-2.3.4.

* gnu/packages/ruby.scm (ruby)[replacement]: New field.
(ruby-2.3.4): New variable.

gnu: ruby-2.2: Update to 2.2.7.

* gnu/packages/ruby.scm (ruby-2.2): Update to 2.2.7.

gnu: tuxguitar: Update to 1.4.

* gnu/packages/music.scm (tuxguitar): Update to 1.4.
[arguments]: Replace build phase "build-editor-utils" with "build-libraries";
install resources to the expected locations.

gnu: pd: Run autogen.sh script.

* gnu/packages/music.scm (pd)[arguments]: Run autogen.sh instead of
plain autoreconf.

gnu: pd: Fix indentation of phases.

* gnu/packages/music.scm (pd)[arguments]: Fix indentation.

gnu: pd: Update to 0.47-1.

* gnu/packages/music.scm (pd): Update to 0.47-1.

gnu: tuxguitar: Update home page URL.

* gnu/packages/music.scm (tuxguitar)[home-page]: Update URL.

gnu: setbfree: Update to 0.8.4

* gnu/packages/music.scm (setbfree): Update to 0.8.4.

gnu: amsynth: Build with LASH support.

* gnu/packages/music.scm (amsynth)[inputs]: Add lash.

gnu: amsynth: Update to 1.7.1.

* gnu/packages/music.scm (amsynth): Update to 1.7.1.
[native-inputs]: Add intltool.