Merge branch 'en/merge-recursive-cleanup'

Code cleanup.

* en/merge-recursive-cleanup:
merge-recursive: add pointer about unduly complex looking code
merge-recursive: rename conflict_rename_*() family of functions
merge-recursive: clarify the rename_dir/RENAME_DIR meaning
merge-recursive: align labels with their respective code blocks
merge-recursive: fix numerous argument alignment issues
merge-recursive: fix miscellaneous grammar error in comment

diff --cc merge-recursive.c
Simple merge