branch master updated (c2783e2 -> ab20d74)

[Ludovic Courtès]

civodul pushed a change to branch master
in repository guix.

      from  c2783e2   gnu: geoclue: Update to 2.4.4.
       new  b5fed90   gexp: Remove outdated comment.
       new  ebdfd77   gexp: Compilers can now provide an "expander".
       new  a9e5e92   gexp: Add 'file-append'.
       new  44d5f54   system: grub: Allow arbitrary kernel file names in 
'menu-entry'.
       new  ab20d74   system: Build the initrd file name with 'file-append'.

The 5 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       |   57 +++++++++++++++++++++++++---
 gnu/system.scm      |   34 ++++++++++++++---
 gnu/system/grub.scm |   13 ++-----
 guix/gexp.scm       |  105 +++++++++++++++++++++++++++++++++++++++------------
 tests/gexp.scm      |   53 ++++++++++++++++++++++++++
 5 files changed, 216 insertions(+), 46 deletions(-)