Merge branch 'jc/commit-amend-no-edit'

* jc/commit-amend-no-edit:
test: commit --amend should honor --no-edit
commit: honour --no-edit
t7501 (commit): modernize style
test: remove a porcelain test that hard-codes commit names
test: add missing "&&" after echo command

diff --cc builtin/commit.c
Simple merge