c_rehash: upgraded package to upstream

Upgraded app-misc/c_rehash to version 1.7-r1 for all.
Needed by newer openssl build.

BUG=None
TEST=precq passes

Change-Id: Ib36f05e31499a0cd343c2e68565d45069eabf7d1
Reviewed-on: https://chromium-review.googlesource.com/324980
Commit-Ready: Mike Frysinger <vapier@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
Reviewed-by: Darren Krahn <dkrahn@chromium.org>
(cherry picked from commit 55aec396e4e68813cc776915c0e60b83fff824de)
Reviewed-on: https://chromium-review.googlesource.com/331991
3 files changed