Fix log_to

I tried setting "log_to = console", but fl-run-test was ALWAYS
putting the output in a log file.  I found the problem was that
the "option" was always being set and therefore clobbering what
was in the conf file.
Colored output shouldn't be so hard - trimmed code

Removed a lot of redundant code (code that was basically duplicated
from unittest, with a couple red_str, green_str additions).  Now just
provide the needed objects to the constructor of unittest.TextTestRunner
Allow discover mode to use -u, -c, -D, etc options
Merge pull request #114 from sjbrown/fix_ftest_log_to

Fix log_to
Merge pull request #115 from sjbrown/simple-color-stream

Colored output shouldn't be so hard - trimmed code
Merge pull request #117 from sjbrown/discover-bench

Allow discover mode to use -u, -c, -D, etc options