Adds a diff canonifier that skips diffing the places where example.bro
may use MutableVal derivatives (e.g. sets/tables), which don't always
generate the same ordering in the reST docs across runs.
Note that I've shifted things around a little bit. The traces are now
in Traces/* (capital T), and the known-hosts-test in policy/*.
Scripts/ was meant just for helper shell scripts for the testing
framework. Also, I've not yet included "policy" in btest.cfg as a
TestDir because the corresponding script is not yet in master.
* origin/topic/appleman/unittests:
Test, trace file, and baseline for testing the known-services policy script
Baseline for KNOWN-HOSTS tesT
Initial drop of known-hosts unit test, with tracefile and directory structure, as well as c ouple of files pulled from Robin's logging branch.
