Merge branch 'ab/send-email-inline-hooks-path'

Code simplification.

* ab/send-email-inline-hooks-path:
  send-email: move "hooks_path" invocation to git-send-email.perl
  send-email: don't needlessly abs_path() the core.hooksPath

diff --cc git-send-email.perl
Simple merge

diff --cc t/t9001-send-email.sh
Simple merge