gnu: borg: Rebuild generated C files.

* gnu/packages/backup.scm (borg)[source]: Remove generated '.c' files.
[native-inputs]: Add python-cython.

gnu: Remove elementary, evas-generic-loaders, emotion-generic-players.

* gnu/packages/enlightenment.scm (elementary, evas-generic-loaders)
(emotion-generic-players): Remove variables.

These packages were absorbed by efl-1.18.0.

gnu: Add mb2md.

* gnu/packages/mail.scm (mb2md): New variable.

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

gnu: Add ola.

* gnu/packages/ola.scm (ola): New variable.

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

gnu: libvpx: Update to 1.6.0.

* gnu/packages/video.scm (libvpx): Update to 1.6.0.

gnu: bitcoin-core: Update to 0.13.0.

* gnu/packages/finance.scm (bitcoin-core): Update to 0.13.0.
[native-inputs]: Use python-3 over python-2.

system: Use 'source-module-closure' where needed.

* gnu/system/vm.scm (%vm-module-closure): Remove.
(expression->derivation-in-linux-vm): Use 'source-module-closure'
instead of %VM-MODULE-CLOSURE.
(qemu-image): Likewise.
* gnu/system/linux-initrd.scm (expression->initrd): Likewise.
(flat-linux-module-directory, base-initrd): Likewise.
* gnu/system/mapped-devices.scm (open-luks-device): Likewise.

Add (guix modules).

* guix/modules.scm, tests/modules.scm: New files.
* Makefile.am (MODULES, SCM_TESTS): Add them.
* doc/guix.texi (G-Expressions): Add an example of
'source-module-closure'.

file-systems: Always use (guix build syscalls).

* gnu/build/file-systems.scm: Use (guix build syscalls)
unconditionally.  Override the 'mount' and 'umount' bindings
when (guile) provides them.
(MS_RDONLY, MS_NOSUID, MS_NODEV, MS_NOEXEC, MS_REMOUNT)
(MS_BIND, MS_MOVE): Remove.
* guix/build/syscalls.scm (%libc-errno-pointer): Add
'false-if-exception' around 'dynamic-func'.

ui: Initialize %FILE-PORT-NAME-CANONICALIZATION to #f.

This avoids loads of needless 'stat' calls due to the default 'relative
setting and the 'canonicalize-path' calls it leads to.  This was
especially visible when 'guix substitute' access files in
/var/guix/substitute/cache.

* guix/ui.scm (run-guix-command): Set %FILE-PORT-NAME-CANONICALIZATION
to #f.

gnu: nano: Update to 2.7.0.

* gnu/packages/nano.scm (nano): Update to 2.7.0.

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

gnu: Add remind.

* gnu/packages/calendar.scm (remind): New variable.

gnu: Add p7zip.

* gnu/packages/compression.scm (p7zip): New variable.
* gnu/packages/patches/remove-unused-p7zip-code.patch: New patch.
* gnu/local.mk (dist_patch_DATA): Add it.

gnu: rage: Update to 0.2.1.

* gnu/packages/enlightenment.scm (rage): Update to 0.2.1.

gnu: Add libicns.

* gnu/packages/image.scm (libicns): New variable.

Signed-off-by: David Craven <david@craven.ch>

gnu: dtc: Update to 1.4.2.

* gnu/packages/u-boot.scm (dtc): Update to 1.4.2. Delete patch.
* gnu/packages/patches/dtc-add-missing-symbols-to-lds.patch: Delete patch.
* gnu/local.mk (dist_patch_DATA): Delete patch.

Signed-off-by: David Craven <david@craven.ch>

gnu: gzochi: Update to 0.10.1.

* gnu/packages/game-development.scm (gzochi): Update to 0.10.1.

Signed-off-by: David Craven <david@craven.ch>

gnu: infernal: Limit to i686 and x86_64 systems.

* gnu/packages/bioinformatics.scm (infernal)[supported-systems]: The
package requires VMX or SSE capability for parallel instructions, so
limit it to those supported systems.

gnu: Add python-odfpy.

* gnu/packages/python.scm (python-odfpy, python2-odfpy): New variables.

Signed-off-by: Alex Kost <alezost@gmail.com>

gnu: awesome: Shorten the description.

* gnu/packages/wm.scm (awesome)[description]: Shorten.

Signed-off-by: Alex Kost <alezost@gmail.com>