branch core-updates updated (3a2efbc -> 27130ee)

[guix-commits]

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

      from  3a2efbc   gnu: python-libxml2, itstool: Provide crash-free variants.
       new  4b57796   gnu: instantmusic: Fix build failure.
       new  1f78a99   gnu: perf: Really build without '-Werror'.
       new  27130ee   gnu: libsmpeg: Fix build failure with GCC 7.

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/linux.scm | 4 ++++
 gnu/packages/music.scm | 4 ++--
 gnu/packages/video.scm | 4 ++++
 3 files changed, 10 insertions(+), 2 deletions(-)