* fully restore fork remote renaming behavior
* catch blank remote name and error + arg tests
* hard wrap fork usage
* do not rename if remote-name supplied
* tweak error text
For asserting command output, exact string matches are preferred in most cases. In cases when a pattern match is needed, the test can use regexp ad hoc.
This commit is another isolation refactor, this time for repo fork.
However, I got fed up with the --remote="true|false|prompt" style of
flags and took this opportunity to switch to a set of bool flags:
--remote and --clone
--no-remote and --no-clone
the string args were really non standard and confusing; with only two
bools it was impossible to tell when to prompt.
