gnu: u-boot: Update to 2017.03.

* gnu/packages/bootloaders.scm (u-boot): Update to 2017.03.

gnu: icecat: Add selected fixes from upstream mozilla-esr45.

* gnu/packages/gnuzilla.scm (icecat)[source][patches]: Add selected fixes from
the upstream mozilla-esr45 repository.

gnu: libevent@2.0: Add fix from upstream.

This fix was cherry-picked by Mozilla from upstream libevent-2.1 to its
bundled copy of libevent-2.0.21 in mozilla-esr45.

* gnu/packages/patches/libevent-2.0-evbuffer-add-use-last-with-datap.patch:
New file.
* gnu/local.mk (dist_patch_DATA): Add it.
* gnu/packages/libevent.scm (libevent-2.0)[source][patches]: Add it.

services: file-system-shepherd-service: Make it find the fsck programs.

Fixes <https://bugs.gnu.org/25917>.

* gnu/services/base.scm (file-system-shepherd-service): Use
file-system-packages.

gnu: guile-commonmark: Default to Guile 2.2.

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

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.

doc: Clarify reference.

* doc/guix.texi (Invoking guix environment): Explicitly name
  "guix environment".

doc: Fix examples.

To "spawns a Guile REPL", --ad-hoc is required.

* doc/guix.texi (Invoking guix environment): Add "--ad-hoc" to
  container examples.

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.