branch master updated (904a704 -> 2438346)

[Ricardo Wurmus]

rekado pushed a change to branch master
in repository maintenance.

      from  904a704   talks: Add slides for BOSC 2017.
       new  ba51324   talks: Update BOSC 2017 slides to final version.
       new  74fe24f   hydra: Add offloading file for berlin.guixsd.org.
       new  2438346   hydra: berlin: Set GIT_SSL_CAINFO and GIT_EXEC_PATH for 
cuirass.

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:
 hydra/berlin.scm              |  56 +++++++++++++++++++++++++++++-
 hydra/machines-for-berlin.scm |  18 ++++++++++
 talks/bosc-2017/slides.pdf    | Bin 782407 -> 787623 bytes
 talks/bosc-2017/summary.svg   |  77 ++++++++++++++++++++++++++++++------------
 4 files changed, 128 insertions(+), 23 deletions(-)
 create mode 100644 hydra/machines-for-berlin.scm