gnu: tig: Install man pages.

* gnu/packages/version-control.scm (tig)[native-inputs]: Add asciidoc, xmlto.

gnu: tig: Add search completion and history support.

* gnu/packages/version-control.scm (tig)[inputs]: Add readline.

gnu: tig: Update to 2.2.

* gnu/packages/version-control.scm (tig): Update to 2.2.

gnu: Add utox.

* gnu/packages/messaging.scm (utox): New variable.

Signed-off-by: Efraim Flashner <efraim@flashner.co.il>

gnu: Add filteraudio.

* gnu/packages/audio.scm (filteraudio): New variable.

Signed-off-by: Efraim Flashner <efraim@flashner.co.il>

gnu: glew: Update to 2.0.0.

* gnu/packages/gl.scm (glew): Update to 2.0.0.

Signed-off-by: Leo Famulari <leo@famulari.name>

system: Use 'file-append' to denote file names.

* gnu/services/avahi.scm, gnu/services/base.scm,
gnu/services/databases.scm, gnu/services/dbus.scm,
gnu/services/desktop.scm, gnu/services/dict.scm,
gnu/services/mail.scm, gnu/services/networking.scm,
gnu/services/sddm.scm, gnu/services/spice.scm,
gnu/services/ssh.scm, gnu/services/web.scm,
gnu/services/xorg.scm, gnu/system.scm: Replace the
 #~(string-append #$pkg "/bin/foo") idiom with
 (file-append pkg "/bin/foo").

gexp: Store compilers in a hash table for O(1) lookup.

* guix/gexp.scm (<gexp-compiler>)[predicate]: Remove.
[type]: New field.
(%gexp-compilers): Turn into a hash table.
(register-compiler!, lookup-compiler, lookup-expander): Adjust
accordingly.
(define-gexp-compiler): Replace 'predicate' by 'record-type'.
(derivation-compiler, local-file-compiler, plain-file-compiler)
(computed-file-compiler, program-file-compiler, scheme-file-compiler)
(file-append-compiler): Adjust accordingly.
* guix/packages.scm (package-compiler, origin-compiler): Likewise.

gnu: pdf: Remove erroneous module import.

This is a followup to commit c41d97bed6ee1765e0845567444d4d2af1a4d373.

* gnu/packages/pdf.scm: Don't import (gnu packages javascript).

gnu: letsencrypt: Superseded by certbot.

* gnu/packages/tls.scm (letsencrypt)[properties]: New field.

gnu: Remove openjpeg-2.0.

* gnu/packages/image.scm (openjpeg-2.0): Remove variable.

gnu: mupdf: Update to 1.9a.

* gnu/packages/pdf.scm (mupdf): Update to 1.9a.
[source]: Use "mupdf-build-with-openjpeg-2.1.patch". Adjust snippet to
preserve bundled 'thirdparty/mujs'.
[inputs]: Add harfbuzz. Replace openjpeg-2.0 with openjpeg.
* gnu/packages/patches/mupdf-build-with-openjpeg-2.1.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.

gnu: openjpeg: Fix CVE-2016-5157.

* gnu/packages/patches/openjpeg-CVE-2016-5157.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.
* gnu/packages/image.scm (openjpeg): Use it.

gnu: openjpeg-2.*: Fix CVE-2016-7163.

* gnu/packages/patches/openjpeg-CVE-2016-7163.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.
* gnu/packages/image.scm (openjpeg, openjpeg-2.0): Use it.

gnu: openjpeg: Update to 2.1.1.

* gnu/packages/image.scm (openjpeg): Update to 2.1.1.
[source]: Use GitHub URL and add file-name field. Remove
"openjpeg-use-after-free-fix.patch" and "openjpeg-CVE-2015-6581.patch" from
patches.

gnu: bamm: Update to 1.7.3.

* gnu/packages/bioinformatics.scm (bamm): Update to 1.7.3.

system: Build the initrd file name with 'file-append'.

* gnu/system.scm (operating-system-initrd-file)
(operating-system-grub.cfg): Use 'file-append' to construct the initrd
file name.

system: grub: Allow arbitrary kernel file names in 'menu-entry'.

Fixes <http://bugs.gnu.org/20067>.
Reported by Tomáš Čech <sleep_walker@suse.cz>.

* gnu/system.scm (system-linux-image-file-name)
(operating-system-kernel-file): New procedures.
(operating-system-grub.cfg): Use 'operating-system-kernel-file' for the
'kernel' field of 'menu-entry'.
(operating-system-parameters-file): Likewise for the 'kernel' entry.
(read-boot-parameters): Adjust 'kernel' field so that it contains the
absolute file name of the image.
* gnu/system/grub.scm (grub-configuration-file)[linux-image-name]:
Remove.
[entry->gexp]: Assume LINUX is the absolute file name of the kernel
image.
* doc/guix.texi (GRUB Configuration): Add an example, and adjust
'kernel' field documentation accordingly.

gexp: Add 'file-append'.

* guix/gexp.scm (<file-append>): New record type.
(file-append): New procedure.
(file-append-compiler): New gexp compiler.
* tests/gexp.scm ("file-append", "file-append, output")
("file-append, nested", "gexp->file + file-append"): New tests.
* doc/guix.texi (G-Expressions): Use it in 'nscd' and 'list-files'
examples.  Document 'file-append'.

gexp: Compilers can now provide an "expander".

* guix/gexp.scm (<gexp-compiler>)[expand]: New field.
(default-expander, lookup-expander): New procedures.
(define-gexp-compiler): Add second pattern to allow for the definition
of both a compiler and an expander.
(gexp->sexp)[reference->sexp]: Call 'lookup-expander' and use its
result.