branch master updated (a9468b4 -> 130c3bc)

[Ludovic Courtès]

civodul pushed a change to branch master
in repository guix.

      from  a9468b4   substitute: Download from unauthorized sources that 
provide the right content.
       new  21c2757   gnu: guix: Update snapshot.
       new  e9f3811   gnu-maintenance: Correctly compare versions.
       new  1b3ebae   gnu-maintenance: Return all the latest tarballs, not just 
one.
       new  4918e7f   download: Adjust main ftp.gnu.org mirror.
       new  130c3bc   gnu: gdb: Update to 8.0.1.

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:
 gnu/packages/gdb.scm                |  4 ++--
 gnu/packages/package-management.scm |  6 +++---
 guix/download.scm                   |  4 ++--
 guix/gnu-maintenance.scm            | 32 ++++++++++++++++++++++----------
 4 files changed, 29 insertions(+), 17 deletions(-)