Merge branch 'jk/maint-quiet-is-synonym-to-s-in-log'

We tried to bend backwards to allow "--quiet" to be a synonym as
"-s" when given as e.g. "git show --quiet", but did not quite
succeed.

* jk/maint-quiet-is-synonym-to-s-in-log:
  log: fix --quiet synonym for -s

diff --cc builtin/log.c
Simple merge