Interleaved output

[SeanTAllen]

Sometimes I get:

fetch: fetching from /home/sean/code/ponylang/glob
git cloning github.com/ponylang/regex.git into /home/sean/code/ponylang/glob/_repos/github_com_ponylang_regex_gitfetch: fetching dep: github.com/ponylang/regex @ 1.0.0

git checking out @1.0.0 into /home/sean/code/ponylang/glob/_corral/github_com_ponylang_regex
No dep bundle for: github.com/ponylang/regex.git

Where the "\n" at the end of "/home/sean/code/ponylang/glob/_repos/github_com_ponylang_regex_git" got lost.

It appears 1 message is going through STDERR and the other STDOUT.
This could be a pony runtime env out error with the interleaving.

[SeanTAllen]

As part of this, the custom Logger that Corral is using should be replaced with the Pony standard library logging mechanism which is almost identical in terms of functionality.

https://github.com/ponylang/corral/blob/master/corral/util/log.pony