Merge branch 'mt/do-not-use-scld-in-working-tree'

"git apply" adjusted the permission bits of working-tree files and
directories according core.sharedRepository setting by mistake and
for a long time, which has been corrected.

* mt/do-not-use-scld-in-working-tree:
  apply: don't use core.sharedRepository to create working tree files

diff --cc apply.c
Simple merge

diff --cc cache.h
Simple merge

diff --cc t/test-lib-functions.sh
Simple merge