Further merging down for 1.7.12.1

Further merging down for 1.7.12.1

We will wait for a handful of other fixes that have graduated to the
'master' for 1.8.0 to be tested in the wild and then tag 1.7.12.1:

 . mz/cherry-pick-cmdline-order
 . jk/maint-quiet-is-synonym-to-s-in-log
 . jk/maint-http-half-auth-push
 . jc/apply-binary-p0
 . jk/config-warn-on-inaccessible-paths
 . kk/maint-for-each-ref-multi-sort

Signed-off-by: Junio C Hamano <gitster@pobox.com>