gnu: Add enigma. * gnu/packages/games.scm (enigma): New variable.
gnu: Add xerces-c. * gnu/packages/xml.scm (xerces-c): New variable.
gnu: schismtracker: Update to 20170420. * gnu/packages/music.scm (schismtracker): Update to 20170420.
gnu: awscli: Add python-pyyaml input. Without this input, 'aws ec2 import-key-pair' doesn't work. * gnu/packages/python.scm (awscli)[propagated-inputs]: Add python-pyyaml.
gnu: virt-manager: Update to 1.4.1. * gnu/packages/qemu.scm (virt-manager): Update to 1.4.1.
gnu: python-libvirt: Update to 3.2.0. * gnu/packages/qemu.scm (python-libvirt, python2-libvirt): Update to 3.2.0.
gnu: libvirt-glib: Update to 1.0.0. * gnu/packages/qemu.scm (libvirt-glib): Update to 1.0.0.
gnu: libvirt: Update to 3.2.0. * gnu/packages/qemu.scm (libvirt): Update to 3.2.0.
gnu: r-preprocesscore: Update to 1.38.0. * gnu/packages/statistics.scm (r-preprocesscore): Update to 1.38.0.
gnu: r-msnid: Update to 1.10.0. * gnu/packages/bioinformatics.scm (r-msnid): Update to 1.10.0.
gnu: r-msnbase: Update to 2.2.0. * gnu/packages/bioinformatics.scm (r-msnbase): Update to 2.2.0.
gnu: r-pcamethods: Update to 1.68.0. * gnu/packages/bioinformatics.scm (r-pcamethods): Update to 1.68.0.
gnu: r-mzid: Update to 1.14.0. * gnu/packages/bioinformatics.scm (r-mzid): Update to 1.14.0.
gnu: r-vsn: Update to 3.44.0. * gnu/packages/bioinformatics.scm (r-vsn): [source]: Update to 3.44.0, [propagated-inputs]: Add r-hexbin.
gnu: r-affy: Update to 1.54.0. * gnu/packages/bioinformatics.scm (r-affy): Update to 1.54.0.
gnu: r-affyio: Update to 1.46.0. * gnu/packages/bioinformatics.scm (r-affyio): Update to 1.46.0.
gnu: r-mzr: Update to 2.10.0. * gnu/packages/bioinformatics.scm (r-mzr): Update to 2.10.0.
gnu: r-protgenerics: Update to 1.8.0. * gnu/packages/bioinformatics.scm (r-protgenerics): Update to 1.8.0.
gnu: r-sva: Update to 3.24.0. * gnu/packages/bioinformatics.scm (r-sva): Update to 3.24.0.
gnu: r-copywriter: Update to 2.8.0. * gnu/packages/bioinformatics.scm (r-copywriter): Update to 2.8.0.