Merge branch 'core-updates'

gnu: isc-dhcp: In native builds, refer to the final Coreutils and sed.

* gnu/packages/admin.scm (isc-dhcp)[inputs]: Add Coreutils and sed only
  when (%current-target-system) is true.

Merge branch 'master' into core-updates

gnu: Add WakeLan.

* gnu/packages/admin.scm (wakelan): New variable.

Merge branch 'master' into core-updates

gnu: Add wpa_supplicant.

* gnu/packages/admin.scm (wpa-supplicant): New variable.

gnu: Add sudo.

* gnu/packages/admin.scm (sudo): New variable.

gnu: tcpdump: Add dependency on OpenSSL.

* gnu/packages/admin.scm (tcpdump)[inputs]: Add OpenSSL.

gnu: Add Rot[t]log.

* gnu/packages/admin.scm (rottlog): New variable.

gnu: Add tcpdump.

* gnu/packages/admin.scm (tcpdump): New variable.

build-system/gnu: Reset timestamps on build tree when source is a directory.

* guix/build/utils.scm (copy-recursively): Add #:keep-mtime? parameter
  and honor it.
* guix/build/gnu-build-system.scm (unpack): Use #:keep-mtime? #t.
* gnu/packages/admin.scm (shadow)[arguments]: Remove 'reset-timestamps'
  phase.

gnu: shadow: Make source file timestamps deterministic.

* gnu/packages/admin.scm (shadow)[arguments]: Add 'reset-timestamps'
  phase.

gnu: Add clusterssh

* gnu/packages/admin.scm (clusterssh): New variable

gnu: net-base: Upgrade to 5.2.

* gnu/packages/admin.scm (net-base): Upgrade to 5.2; use
  'mirror://debian'.

gnu: shadow: Take the source from Git.

* gnu/packages/admin.scm (shadow)[source]: Use the git repo.

Merge branch 'master' into core-updates

gnu: netcat: Install docs in share/man and share/info.

* gnu/packages/admin.scm (netcat): Add --mandir and --infodir
  configure flags.

Merge branch 'master' into core-updates

gnu: Add libpcap and jnettop.

* gnu/packages/admin.scm (libpcap, jnettop): New variables.

Merge branch 'master' into core-updates

Conflicts:
	gnu-system.am