build: Bump version number.

* configure.ac: Change version to 0.9.1.

doc: Remove double occurrence of words.

* doc/guix.texi: substitute 'the the' with 'the'.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>

build: pull: Compile .scm files in one process.

* guix/build/pull.scm (call-with-process, report-build-progress)
(p-for-each): Remove.
(build-guix): Load and compile files in one process.

gnu: calibre: Update to 2.48.0.

* gnu/packages/ebook.scm (calibre): Update to 2.48.0.

gnu: Add LDC.

* gnu/packages/ldc.scm: New file.
* gnu/packages/patches/ldc-disable-tests.patch: New file.
* gnu-system.am (GNU_SYSTEM_MODULES): Add ldc.scm.
  (dist_patch_DATA): Add patch file.

gnu: Add emacs-undo-tree.

 * gnu/packages/emacs.scm (emacs-undo-tree): New variable.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>

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.