gnu: Add guile2.2-ssh.

* gnu/packages/ssh.scm (guile2.2-ssh): New variable.

download: Work around Guile 2.2 bug with 'time-monotonic' objects.

* guix/build/download.scm (time-monotonic) [guile-2.2]: New variable.

gnu: Add policycoreutils.

* gnu/packages/selinux.scm (policycoreutils): New variable.

gnu: Add python-setools.

* gnu/packages/selinux.scm (python-setools): New variable.

gnu: Add python-ipy.

* gnu/packages/networking.scm (python-ipy): New variable.

gnu: Add python-sepolgen.

* gnu/packages/selinux.scm (python-sepolgen): New variable.

gnu: Add secilc.

* gnu/packages/selinux.scm (secilc): New variable.

gnu: Add libsemanage.

* gnu/packages/selinux.scm (libsemanage): New variable.

gnu: Add libselinux.

* gnu/packages/selinux.scm (libselinux): New variable.

gnu: Add checkpolicy.

* gnu/packages/selinux.scm (checkpolicy): New variable.

gnu: Add libsepol.

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

gnu: ibus-libpinyin: Update to 1.9.0.

* gnu/packages/ibus.scm (ibus-libpinyin): Update to 1.9.0.

gnu: libpinyin: Adjust indentation.

* gnu/packages/ibus.scm (libpinyin)[arguments]: Adjust indentation.

gnu: libpinyin: Update to 2.0.0.

* gnu/packages/ibus.scm (libpinyin): Update to 2.0.0.

gnu: Remove unused patches.

* gnu/packages/patches/gcc-libiberty-printf-decl.patch,
gnu/packages/patches/grub-CVE-2015-8370.patch,
gnu/packages/patches/grub-freetype.patch,
gnu/packages/patches/grub-gets-undeclared.patch,
gnu/packages/patches/guile-arm-fixes.patch,
gnu/packages/patches/mplayer2-theora-fix.patch,
gnu/packages/patches/soprano-find-clucene.patch,
gnu/packages/patches/util-linux-CVE-2017-2616.patch,
gnu/packages/patches/xf86-video-intel-compat-api.patch,
gnu/packages/patches/xf86-video-intel-glibc-2.20.patch: Delete files.
* gnu/local.mk (dist_patch_DATA): Remove them.

tests: Adjust to the addition of a new Coreutils version.

* tests/scripts-build.scm ("options->transformation, with-input"): Use
'specification->package' rather than refer to Coreutils by its
variable.  This is a followup to e162050dfc0dee708a7ac5bfcf37d2afd6081604.

derivations: Restore UTF-8 encoding of build scripts.

Reported by Mark H Weaver <mhw@netris.org>
at <https://lists.gnu.org/archive/html/guix-devel/2017-04/msg00457.html>.

* guix/derivations.scm (build-expression->derivation): Use a string
output port for the expression.  This reverts part of
2dce88d5bbe7a65e101c0734d1c6db44ecc8c299.
* tests/derivations.scm ("build-expression->derivation and builder
encoding"): New test.

gnu: libsodium: Update to 1.0.12.

* gnu/packages/crypto.scm (libsodium): Update to 1.0.12.

gnu: Add crawl.

* gnu/packages/games.scm (crawl): New variable.

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

gnu: Add libbson.

* gnu/packages/serialization.scm (libbson): New variables.

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