gnu: asciinema: Update to 1.4.0.

* gnu/packages/terminals.scm (asciinema): Update to 1.4.0.
[source]: Use pypi-uri.

Signed-off-by: Arun Isaac <arunisaac@systemreboot.net>

gnu: jasper: Update to 2.0.13.

* gnu/packages/image.scm (jasper): Update to 2.0.13.
[source]: Use GitHub URL and set the file-name. Remove
'jasper-CVE-2017-6850.patch'.
* gnu/packages/patches/jasper-CVE-2017-6850.patch: Delete file.
* gnu/local.mk (dist_patch_DATA): Remove it.

gnu: cross-base: Turn '%xgcc' into a macro.

Previously:

  ./pre-inst-env guile -c '(use-modules (gnu packages gcc))'

would fail due to circular dependencies.

* gnu/packages/cross-base.scm (%xgcc): Turn into a macro.

gnu: Add translate-shell.

* gnu/packages/dictionaries.scm (translate-shell): New variable.

gnu: libtiff@4.0.8: Fix source URL.

* gnu/packages/image.scm (libtiff-4.0.8)[origin]: Use 'ftp://' not
'http://'.

byzanz: Add file-name for source.

* gnu/packages/gnome.scm (byzanz)[source]: Add file-name field.

gnu: diamond: Update to 0.9.3.

* gnu/packages/bioinformatics.scm (diamond): Update to 0.9.3.

doc: Fix typo.

* doc/guix.texi (USB Stick Installation): Fix typo.

gnu: parallel: Update to 20170522.

* gnu/packages/parallel.scm (parallel): Update to 20170522.

gnu: Add emacs-direnv.

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

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

gnu: Add spectrwm.

* gnu/packages/wm.scm (spectrwm): New variable.

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

gnu: Add emacs-restclient.

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

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

scripts: Set thread names.

This allows 'guix publish' threads as well as 'guix substitute' and
'guix offload' processes to be properly labeled in 'top', 'pstree', etc.

* guix/workers.scm (worker-thunk): Add #:thread-name parameter and honor it.
(make-pool): Likewise.
* guix/scripts/publish.scm (http-write): Add calls to 'set-thread-name'
in bodies of 'call-with-new-thread'.
(guix-publish): Call 'set-thread-name'.   Pass #:thread-name to 'make-pool'.
* guix/scripts/offload.scm (guix-offload): Call 'set-thread-name'.
* guix/scripts/substitute.scm (guix-substitute): Likewise.

syscalls: Add 'thread-name' and 'set-thread-name'.

* guix/build/syscalls.scm (PR_SET_NAME, PR_GET_NAME)
(%max-thread-name-length): New variables.
(%prctl, set-thread-name, thread-name): New procedures.
* tests/syscalls.scm ("set-thread-name"): New test.

gnu: certbot, python-acme: Update to 0.14.2.

* gnu/packages/tls.scm (certbot, python-acme, python2-acme): Update to 0.14.2.

gnu: rxvt-unicode: Disable an unwanted code execution vector.

* gnu/packages/patches/rxvt-unicode-escape-sequences.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.
* gnu/packages/xdisorg.scm (rxvt-unicode)[source]: Use it.

gnu: synfigstudio: Fix patch name in 'gnu/local.mk'.

This is a followup to commit 2ac2b17251be51778963e6ced0b83e461d175d01.

* gnu/local.mk (dist_patch_DATA): Fix typo.

gnu: libtiff: Update replacement to 4.0.8 [security fixes].

See 'ChangeLog' in the source distribution for more information about
the bugs and security issues fixed in this release.

* gnu/packages/image.scm (libtiff)[replacement]: Replace with libtiff-4.0.8.
(libtiff/fixed): Replace with ...
(libtiff-4.0.8): New variable.
* gnu/packages/patches/libtiff-CVE-2017-7593.patch,
gnu/packages/patches/libtiff-CVE-2017-7594.patch,
gnu/packages/patches/libtiff-multiple-UBSAN-crashes.patch: Delete files.
* gnu/local.mk (dist_patch_DATA): Remove them.

gnu: offlineimap: Update to 7.1.1.

* gnu/packages/mail.scm (offlineimap): Update to 7.1.1.

gnu: font-bitstream-vera: Use 'font-build-system'.

* gnu/packages/fonts.scm (font-bitstream-vera): Switch to 'font-build-system'.