gnu: fonts: Use install-file where appropriate.

* gnu/packages/fonts.scm (font-wqy-microhei, font-google-roboto)[arguments]:
Substitute the simpler INSTALL-FILE for every COPY-FILE invoked with redundant
arguments.

gnu: mcelog: Update to 148.

* gnu/packages/linux.scm (mcelog): Update to 148.

gnu: Add lshw.

* gnu/packages/linux.scm (lshw): New variable.

Signed-off-by: Marius Bakke <mbakke@fastmail.com>

gnu: grub-efi: Really build the EFI variant.

Fixes a regression introduced in
d846834fc2b2f76aa2e258685bc211edd31866c5 where '--with-platform=efi'
would no longer be passed.

* gnu/packages/grub.scm (grub-efi)[arguments]: Provide a default value
for #:configure-flags.

gnu: epiphany: Update to 3.22.6 [security update].

See <https://bugzilla.gnome.org/show_bug.cgi?id=752738>.

* gnu/packages/gnome.scm (epiphany): Update to 3.22.6.
[arguments]: Add #:configure-flags '("CFLAGS=-std=gnu99").

services: bitlbee: Run in a container.

* gnu/services/networking.scm (bitlbee-shepherd-service): Wrap in
'with-imported-modules' and add 'modules' field.  Use
'make-forkexec-constructor/container' and pass #:mappings.

Add (gnu build shepherd).

* gnu/build/shepherd.scm: New file.
* gnu/local.mk (GNU_SYSTEM_MODULES): Add it.

linux-container: Add 'container-excursion*'.

* gnu/build/linux-container.scm (container-excursion*): New procedure.
* tests/containers.scm ("container-excursion*")
("container-excursion*, same namespaces"): New tests.

services: bitlbee: Read the PID file.

* gnu/services/networking.scm (bitlbee-shepherd-service): Pass
  #:pid-file to 'make-forkexec-constructor'.

file-systems: Add '%network-configuration-files' and '%network-file-mappings'.

* gnu/system/file-systems.scm (%network-configuration-files)
(%network-file-mappings): New variables.
* guix/scripts/environment.scm (%network-configuration-files): Remove.
(launch-environment/container): Refer to '%network-file-mappings'
instead of calling 'filter-map'.

gnu: bdb: Correct license.

* gnu/packages/databases.scm (bdb)[license]: Replace with up-to-date
information. Move previous contents to ...
(bdb-5.3)[license]: ... here.

gnu: dosfstools: Update to 4.1.

* gnu/packages/disk.scm (dosfstools): Update to 4.1.
[arguments]: Enable tests.
[native-inputs]: Add VIM.

gnu: grub: Update to 2.02rc1.

* gnu/packages/grub.scm (grub, grub-efi): Update to 2.02rc1.
[arguments]: Don't disable grub_func_test. Remove #:configure-flags.

gnu: certbot, python-acme: Update to 0.11.1.

* gnu/packages/tls.scm (python-acme, python2-acme): Update to 0.11.1.
(certbot): Update to 0.11.1.
[version]: Use python-acme's version.

gnu: tcpdump: Fetch source from tcpdump.org.

* gnu/packages/admin.scm (tcpdump)[source]: Remove temporary alternate URL.

gnu: ddrescue: Update to 1.22.

* gnu/packages/disk.scm (ddrescue): Update to 1.22.
[home-page]: Use HTTPS.

gnu: Add re2c.

* gnu/packages/re2c.scm: New file.
* gnu/local.mk (GNU_SYSTEM_MODULES): Add re2c.scm.

CC: ng0 <contact.ng0@cryptolab.net>
Signed-off-by: Sergei Trofimovich <slyfox@inbox.ru>
Signed-off-by: Ludovic Courtès <ludo@gnu.org>

linux-container: Add comment on exception handling.

* gnu/build/linux-container.scm (run-container): Add note about writing
the exceptions.

linux-container: Do not rely on 'isatty?'.

This avoids problems where 'isatty?' return #t but 'ttyname' fails with
ENOTTY or such.

* gnu/build/linux-container.scm (mount-file-systems): Remove call of
'isatty?'.  Directly call 'ttyname' and catch 'system-error'.

gnu: xonsh: Update to 0.5.3.

* gnu/packages/shell.scm (xonsh): Update to 0.5.3.