gnu: emacs: Remove 'info.info'.

* gnu/packages/emacs.scm (emacs)[arguments]: Use 'modify-phases'.  Add
'remove-info.info' phase.

linux-boot: Remove verbose output for module loads.

* gnu/build/linux-boot.scm (boot-system): Leave
'current-module-debugging-port' unchanged.
* gnu/build/linux-modules.scm (load-linux-module*): Update comment about
'mmap'.

services: Move /tmp cleanup to a separate service.

* gnu/services.scm (compute-boot-script): Remove /tmp and /var/run
deletion code from here.
(cleanup-gexp): New procedure with /tmp and /var/run deletion code
formerly in 'compute-boot-script'.
(cleanup-service-type): New variable.
* gnu/system.scm (essential-services): Add an instance of
CLEANUP-SERVICE-TYPE.

services: boot: Reinstate /tmp and /var/run deletion.

For some time /tmp and /var/run were not being deleted because
'delete-file-recursively' was unbound.

* gnu/services.scm (compute-boot-script)[%modules, modules, compiled]:
New variables.  Use them to augment the module search path.

guix package: Allow multiple '--search' flags.

* guix/scripts/package.scm (find-packages-by-description): Change 'rx'
parameter to 'regexps'.
[matches-all?, matches-one?]: New procedures.
Use them.
(process-query): Collect regexps from all 'search' queries, and pass
them to 'find-packages-by-description'.
* tests/guix-package.sh: Add tests.
* doc/guix.texi (Invoking guix package): Document it.

ui: Update copyright year in '--version' output.

* guix/ui.scm (show-version-and-exit): Increment copyright year.

git-download: Correctly implement recursive checkouts.

Previously, the 'git checkout' invocation would remove sub-modules that
had been initialized by 'git clone --recursive'.

* guix/build/git.scm (git-fetch): Never use "git clone --recursive".
Invoke "git submodule update --init --recursive" after "git checkout".
Remove '.git' directories as the last step.

gnu: gtk+: Add patch to support GUIX_GTK3_PATH.

* gnu/packages/patches/gtk3-respect-GUIX_GTK3_PATH: New file.
* gnu-system.am (dist_patch_DATA): Add it.
* gnu/packages/gtk.scm (gtk+) [source]: Add patch.
[native-search-paths]: Add search path for GUIX_GTK3_PATH.

gnu: gtk+-2: Add patch to support GUIX_GTK2_PATH.

* gnu/packages/patches/gtk2-respect-GUIX_GTK2_PATH: New file.
* gnu-system.am (dist_patch_DATA): Add it.
* gnu/packages/gtk.scm (gtk+-2) [source]: Add patch.
[native-search-paths]: Add search path for GUIX_GTK2_PATH.

gnu: julia: Update to 0.4.2.

* gnu/packages/patches/julia-0.3.10-fix-empty-array.patch: Remove file.
* gnu-system.am (dist_patch_DATA): Remove it.
* gnu/packages/julia.scm (julia): Update to 0.4.2.
[arguments]: Remove phase "fix-building-with-mcjit-llvm"; replace phase
"patch-include-path" with "fix-include-and-link-paths"; add phase
"hardcode-paths"; add missing make-flags.
[inputs]: Replace "pcre" with "pcre2"; replace "git" with "libgit2"; add
"coreutils"; add "libuv-julia"; add "wget"; add "which".
[native-inputs]: Remove "which".

gnu: Add libuv-julia.

* gnu/packages/julia.scm (libuv-julia): New variable.

gnu: utf8proc: Update to 1.3.1.

* gnu/packages/textutils.scm (utf8proc): Update to 1.3.1.
[arguments]: Remove custom "install" phase.

gnu: samba: Update to 4.3.3.

Fixes CVE-2015-{3223,5252,5299,5296,8467,5330}.

* gnu/packages/samba.scm (samba): Update to 4.3.3.

gnu: ldb: Update to 1.1.24.

Required for samba-4.3.3 in order to fix CVE-2015-5330 and
CVE-2015-3223.

* gnu/packages/samba.scm (ldb): Update to 1.2.24.

gnu: Add Asymptote.

* gnu/packages/bdw-gc.scm (libgc-for-c++): New variable.
* gnu/packages/plotutils.scm (asymptote): New variable.
* gnu/packages/patches/asymptote-gsl2.patch: New file.
* gnu-system.am (dist_patch_DATA): Add it.

graph: %BAG-WITH-ORIGINS-NODE-TYPE includes the origin's guile.

Before that it would include #f for most origins since that the default
value of 'origin-patch-guile'.

* guix/scripts/graph.scm (bag-node-edges): When 'origin-patch-guile'
returns #f, use (default-guile).
* tests/graph.scm ("bag DAG, including origins"): Check for an edge from
O to (default-guile).

graph: %BAG-EMERGED-NODE-TYPE filters out origins.

Fixes <http://bugs.gnu.org/22280>.
Reported by Leo Famulari <leo@famulari.name>.

* guix/scripts/graph.scm (%bag-emerged-node-type)[edges]: Mimic
%BAG-NODE-TYPE.  This is a followup to 38b92da.

Update NEWS.

* NEWS: Mention Emacs interface for Hydra and changes in variables.

emacs: Use "B" key in "Package List" to display latest builds.

* emacs/guix-ui-package.el (guix-package-list-latest-builds): New
  procedure.
  (guix-package-list-mode-map): Bind "B" key to it.
  (guix-output-list-mode-map): Likewise.
* doc/emacs.texi (Emacs List buffer): Document it.

emacs: Add Hydra interface.

* emacs/guix-utils.el (guix-hexify, guix-number->bool): New procedures.
  (guix-while-null): New macro.
* emacs/guix-hydra.el: New file.
* emacs/guix-hydra-build.el: New file.
* emacs/guix-hydra-jobset.el: New file.
* emacs.am (ELFILES): Add them.
* doc/emacs.texi (Emacs Hydra): New node.
  (Emacs Interface): Add it.
* doc/guix.texi (Top): Add it.
  (Substitutes): Mention Emacs interface.