branch master updated (9841610 -> 37dd1e6)

[Ludovic Courtès]

civodul pushed a change to branch master
in repository guix.

      from  9841610   gnu: libdvdcss: Update to 1.4.0.
       new  240b57f   guix system: 'reconfigure' loads and starts new services.
       new  37dd1e6   services: 'file-union' makes sure each source file exists.

The 2 revisions listed above as "new" are entirely new to this
repository and will be described in separate emails.  The revisions
listed as "adds" were already present in the repository and have only
been added to this reference.


Summary of changes:
 doc/guix.texi             |    6 ++
 gnu-system.am             |    1 +
 gnu/services.scm          |    7 ++-
 gnu/services/herd.scm     |  189 +++++++++++++++++++++++++++++++++++++++++++++
 gnu/services/shepherd.scm |    6 ++
 guix/scripts/system.scm   |   72 +++++++++++++++--
 guix/ui.scm               |    2 +
 7 files changed, 275 insertions(+), 8 deletions(-)
 create mode 100644 gnu/services/herd.scm