gnu: mdds: Update to 0.12.1.

* gnu/packages/boost.scm (mdds): Update to 0.12.1.

gnu: Add grilo-plugins.

* gnu/packages/gnome.scm (grilo-plugins): New variable.

gnu: Add grilo.

* gnu/packages/gnome.scm (grilo): New variable.

gnu: wpa-supplicant: Fix WPS and P2P NFC NDEF record payload length validation.

* gnu/packages/patches/wpa-supplicant-2015-5-fix.patch: New file.
* gnu-system.am (dist_patch_DATA): Add it.
* gnu/packages/admin.scm (wpa-supplicant-light)[source]: Add patch.

gnu: boost: Update to 1.58.0.

* gnu/packages/boost.scm (boost): Update to 1.58.0.

gnu: Add preseq.

* gnu/packages/bioinformatics.scm (preseq): New variable.
* gnu/packages/patches/preseq-1.0.2-install-to-PREFIX.patch: New file.
* gnu/packages/patches/preseq-1.0.2-link-with-libbam.patch: New file.
* gnu-system.am (dist_patch_DATA): Add them.

gnu: samtools: Install headers.

* gnu/packages/bioinformatics.scm (samtools)[arguments]: Add phase
  "install-headers" to install header files.

tests: Use the right identifier in tests/elpa.scm.

* tests/elpa.scm: Change 'nil->empty' to 'ensure-list' in the whole file.

doc: Remove extra quotes around URLs.

* doc/guix.texi (Invoking guix import): Remove extraneous quotes around URLs.

import: cabal: Make token recognition case-insensitive.

* guix/import/cabal.scm (make-rx-matcher): Add optional parameter FLAG.
  (is-property, is-flag, is-src-repo, is-exec, is-test-suite, is-benchmark,
  is-lib, is-else, is-if): Make test case-insensitive.

gnu: Add emacs-mmm-mode.

* gnu/packages/emacs.scm (emacs-mmm-mode): New variable.

gnu: Add emacs-auctex.

* gnu/packages/emacs.scm: New variable.

build: Add 'emacs-build-system'.

* Makefile.am (MODULES): Add 'guix/build-system/emacs.scm' and
  'guix/build/emacs-build-system.scm'.
* guix/build-system/emacs.scm: New file.
* guix/build/emacs-build-system.scm: New file.
* doc/guix.texi (Build Systems): Document it.

build: emacs-utils: Add 'emacs-byte-compile-directory'.

* guix/build/emacs-utils.scm (emacs-byte-compile-directory): New procedure.

import: Add 'elpa' importer.

* guix/import/elpa.scm: New file.
* guix/scripts/import.scm: Add "elpa" to 'importers'.
* guix/scripts/import/elpa.scm: New file.
* Makefile.am (MODULES): Add 'guix/import/elpa.scm' and
  'guix/scripts/import/elpa.scm'.
  (SCM_TESTS): Add 'tests/elpa.scm'.
* doc/guix.texi (Invoking guix import): Document it.
* tests/elpa.scm: New file.
* po/guix/POTFILES.in: Add 'guix/scripts/import/elpa.scm'.

gnu: system: Move file-system->spec to (gnu system file-systems).

* gnu/system/linux-initrd.scm (file-system->spec): Move this...
* gnu/system/file-systems.scm: ... to here.

gnu: system: Move <file-system-mapping> into (gnu system file-systems).

* gnu/system/vm.scm (<file-system-mapping>, %store-mapping): Move from here...
* gnu/system/file-systems.scm: ...to here.
* guix/scripts/system.scm: Import (gnu system file-systems).

build: syscalls: Add pivot-root.

* guix/build/syscalls.scm (pivot-root): New procedure.
* tests/syscalls.scm ("pivot-root"): New test.

build: syscalls: Add setns.

* guix/build/syscalls.scm (setns): New procedure.
* tests/syscalls.scm ("setns"): New test.

squash: setns

build: syscalls: Add clone.

* guix/build/syscalls.scm (clone): New procedure.
  (CLONE_NEWNS, CLONE_NEWUTS, CLONE_NEWIPC, CLONE_NEWUSER, CLONE_NEWPID,
  CLONE_NEWNET): New variables.
* tests/syscalls.scm ("clone"): New test.