* ho/dashless:
tests: use "git xyzzy" form (t7200 - t9001)
tests: use "git xyzzy" form (t7000 - t7199)
tests: use "git xyzzy" form (t3600 - t6999)
tests: use "git xyzzy" form (t0000 - t3599)
'git foo' program identifies itself without dash in die() messages
Start conforming code to "git subcmd" style