Further merging in preparation for 1.7.12.1

Further merging in preparation for 1.7.12.1

Describe the following in the draft release notes:

 . jc/apply-binary-p0
 . jc/dotdot-is-parent-directory
 . jc/maint-doc-checkout-b-always-takes-branch-name
 . jk/maint-http-half-auth-push
 . kk/maint-for-each-ref-multi-sort

Yet to be merged before 1.7.12.1 are:

 . jk/config-warn-on-inaccessible-paths
 . jk/maint-quiet-is-synonym-to-s-in-log
 . mz/cherry-pick-cmdline-order

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