branch core-updates updated (9a6b8c9 -> f90d6c3)

[guix-commits]

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

      from  9a6b8c9   Merge branch 'staging' into core-updates
       new  5466e82   gnu: groff: Adjust relocatability snippet for 1.22.4.
       new  b4037d8   gnu: groff: Return #t from all phases.
       new  b45a97e   gnu: GCC: Move cross-toolchain build fix to (gnu packages 
cross-base).
       new  e050aa1   gnu: make-bootstrap: Adjust for GCC7.
       new  f90d6c3   gnu: efivar: Fix build failure with GCC7.

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/build/cross-toolchain.scm   | 10 --------
 gnu/packages/cross-base.scm     | 15 ++++++++++-
 gnu/packages/groff.scm          | 56 ++++++++++++++++++-----------------------
 gnu/packages/linux.scm          |  9 ++++++-
 gnu/packages/make-bootstrap.scm | 22 +++++++++++++---
 5 files changed, 66 insertions(+), 46 deletions(-)