gnu: qemu: Add dependency on Samba. * gnu/packages/qemu.scm (qemu-kvm): Add dependency on Samba; pass `--smbd' to ./configure.
gnu: Add QEMU. * gnu/packages/autotools.scm (autoconf-wrapper): Make public. * gnu/packages/qemu.scm (qemu): New variable.
gnu: Add description and license for QEMU-KVM. * gnu/packages/qemu.scm (qemu-kvm): Add description and license.
gnu: Add QEMU-KVM. * gnu/packages/qemu.scm: New file. * Makefile.am (MODULES): Add it.