branch core-updates updated (347f54e -> 31b254a)

[Mark H. Weaver]

mhw pushed a change to branch core-updates
in repository guix.

      from  347f54e   utils: 'find-files' does not follow symlinks by default.
       new  d16c9fd   gnu: Paper over a build circularity problem.
       new  131ddf9   gnu: Add libepoxy.
       new  31b254a   gnu: gtk+: Update to 3.16.0.

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:
 gnu/packages/gl.scm  |   47 +++++++++++++++++++++++++++++++++++++++++++++++
 gnu/packages/gtk.scm |   35 ++++++++++++++++++++---------------
 gnu/packages/sdl.scm |    6 +++---
 3 files changed, 70 insertions(+), 18 deletions(-)