branch core-updates updated (096f008 -> 7fdca77)

[Leo Famulari]

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

      from  096f008   gnu: rcs: Fix build against gcc-5.4.0.
       new  7fdca77   gnu: ustr: Fix build with GCC 5.

The 1 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
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Summary of changes:
 gnu/local.mk                                       |   1 +
 .../patches/ustr-fix-build-with-gcc-5.patch        | 880 +++++++++++++++++++++
 gnu/packages/textutils.scm                         |   4 +-
 3 files changed, 884 insertions(+), 1 deletion(-)
 create mode 100644 gnu/packages/patches/ustr-fix-build-with-gcc-5.patch