Merge branch 'js/builtin-add-p-portability-fix'

More fixes to "add -p"

* js/builtin-add-p-portability-fix:
  t6132(NO_PERL): do not run the scripted `add -p`
  t3701: test the built-in `add -i` regardless of NO_PERL
  add -p: avoid ambiguous signed/unsigned comparison

diff --cc add-patch.c
Simple merge

diff --cc t/t3701-add-interactive.sh
Simple merge