gnu: guile-reader: Default to Guile 2.2.

* gnu/packages/guile.scm (guile-reader)[inputs]: Change GUILE-2.0 to
GUILE-2.2.
(guile2.0-reader): New variable.
(guile2.2-reader): Mark as deprecated.
(haunt)[propagated-inputs]: Use GUILE-READER instead of
GUILE2.2-READER.

gnu: haunt: Default to Guile 2.2.

* gnu/packages/guile.scm (haunt)[inputs]: Replace GUILE-2.0 with
GUILE-2.2.
[propagated-inputs]: Replace GUILE-READER and GUILE-COMMONMARK with
their 2.2 variant.
(guile2.0-haunt): New variable.
(guile2.2-haunt): Mark as deprecated.

gnu: Add 'package-for-guile-2.0'.

* gnu/packages/guile.scm (guile-2.2-package-name): Rename to...
(guile-variant-package-name): ... this.  Change to return a lambda.
(package-for-guile-2.2): Adjust accordingly.
(package-for-guile-2.0): New procedure.

gnu: Rename "guile-next" to "guile".

* gnu/packages/guile.scm (guile-next): Rename to...
(guile-2.2): ... this.  Update users.
[name]: Change to "guile".
[synopsis]: Remove.
[properties]: Remove 'upstream-name', 'ftp-server', and
'ftp-directory'.
* gnu/packages/bioinformatics.scm (rcas-web): Update accordingly.
* gnu/packages/tls.scm (gnutls/guile-2.2): Likewise.
* tests/guix-build.sh: Use 'guile@2.2' instead of 'guile-next'.
* doc/guix.texi (Package Transformation Options): Update examples that
referred to "guile-next".

gnu: Add GNU Mach.

* gnu/packages/hurd.scm (gnumach): New variable.

Co-authored-by: Rene Saavedra <rennes@openmailbox.org>
Co-authored-by: Ludovic Courtès <ludo@gnu.org>

gnu: niftilib: Simplify build phases.

* gnu/packages/image.scm (niftilib)[arguments]: Use make-flags instead of
replacing "configure" phase; simplify "install" phase.

gnu: apl: Update to 1.7.

* gnu/packages/apl.scm (apl): Update to 1.7.
[home-page]: Use https.

gnu: guile-8sync: Update to 0.4.2.

* gnu/packages/guile.scm (guile-8sync): Update to 0.4.2.

gnu: guix: Don't ignore user's GUILE_LOAD_COMPILED_PATH.

* gnu/packages/package-management.scm (guix-0.12.0): Guile skips invalid .go
  files since 2.0.12 so we don't need to override GUILE_LOAD_COMPILED_PATH to
  prevent problems anymore.

gnu: wine: Update to 2.4.

* gnu/packages/wine.scm (wine): Update to 2.4.

gnu: Add niftilib.

* gnu/packages/image.scm (niftilib): New variable.

bug#26152: [PATCH] gnu: limnoria: Update to 20170110.

* gnu/packages/irc.scm (limnoria): Update to 20170110.

Signed-off-by: Danny Milosavljevic <dannym@scratchpost.org>

file-systems: Factorize file-system-packages.

* gnu/system/linux-initrd.scm (base-initrd): Move helper-packages body to ...
* gnu/system/file-systems.scm (file-system-packages): ... here.  New variable.
Also export it.

gnu: rustc: Fix process test.

* gnu/packages/rust.scm (rustc)[arguments]: Rename 'patch-lockfile-test
to 'patch-tests.  Add another substitution.

gnu: Add maxflow.

* gnu/packages/maths.scm (maxflow): New variable.

gnu: Add itpp.

* gnu/packages/maths.scm (itpp): New variable.

gnu: emacs-slime: Update to 2.19.

* gnu/packages/emacs.scm (emacs-slime): Update to 2.19.

gnu: ocaml-qtest: Update to 2.5.

* gnu/packages/ocaml.scm (ocaml-qtest): Update to 2.5.

gnu: libbluray: Update to 1.0.0.

* gnu/packages/video.scm (libbluray): Update to 1.0.0.

gnu: libx264: Update to 20170316-2245.

* gnu/packages/video.scm (libx264): Update to 20170316-2245.