Do not touch world on importing, use explicit function for empdir
creation.

git-describe will prefer annotated tags, git-log has much more straightforward solution

Ans its internal sub-modules to _pretty_*

Including two failing ones

Generalize color codes per function and leave them empty if a "real
pipe" (i.e. pipe or file) is detected[1] on STDERR (2).

 [1]: http://stackoverflow.com/questions/911168/how-to-detect-if-my-shell-script-is-running-through-a-pipe

In this case it's simpler--no need to detect end case and no need to
shift, i.e. less typing/reading.

Now testname.oracle file can specify expected exit status file
as well, or different path for stdout/stderr oracles (default is
testname.oracle.stdout and testname.oracle.stderr)

This effectively allows for testing scenarios where exit status or error
output can be tested as well.

Now that cfgrep speed is vastly improved this test does not need
to be turned off as tedious.

Replace most of sed / grep calls with bash-native code.
Speed improved ~2x for basic tests and over 10x for games_with_spaces

Move to runner parameters -t and -s;  allow filtering based
on test name, sub-test name or both.