Merge branch 'sb/hashmap-customize-comparison' into sb/diff-color-move

Merge branch 'sb/hashmap-customize-comparison' into sb/diff-color-move

* sb/hashmap-customize-comparison: (566 commits)
  hashmap: migrate documentation from Documentation/technical into header
  patch-ids.c: use hashmap correctly
  hashmap.h: compare function has access to a data field
  Twelfth batch for 2.14
  Git 2.13.2
  Eleventh batch for 2.14
  Revert "split-index: add and use unshare_split_index()"
  Tenth batch for 2.14
  add--interactive: quote commentChar regex
  add--interactive: handle EOF in prompt_yesno
  auto-correct: tweak phrasing
  docs: update 64-bit core.packedGitLimit default
  t7508: fix a broken indentation
  grep: fix erroneously copy/pasted variable in check/assert pattern
  Ninth batch for 2.14
  glossary: define 'stash entry'
  status: add optional stash count information
  stash: update documentation to use 'stash entry'
  for_each_bisect_ref(): don't trim refnames
  mergetools/meld: improve compatibiilty with Meld on macOS X
  ...