branch master updated (645deac -> 2b8e9d9)

[???]

iyzsong pushed a change to branch master
in repository guix.

      from  645deac   gnu: samba: Update to 4.3.8.
       new  50a3d59   utils: Add 'edit-expression'.
       new  f7df1e3   utils: Add 'location->source-properties'.
       new  2b8e9d9   gnu-maintenance: update-package-source: Only update the 
desired package.

The 3 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:
 guix/upstream.scm |   68 ++++++++++++++++++-----------------------------------
 guix/utils.scm    |   48 +++++++++++++++++++++++++++++++++++++
 tests/utils.scm   |   13 ++++++++++
 3 files changed, 84 insertions(+), 45 deletions(-)