-the built in ssl cert generater was deprecated so it needed to be
updated or removed. I opted to calling openssl via external
command line execution. doing it this way make it easier to
update if deprecated again and reduces dependancy on libssl.
-tweaked the documentation a little.
-updated build.py to explicitly get the plugins directoy instead
of deriving it from the bin directory.
fixed some errors found in the documentation and fully updated the internal
commands docs as well.
also updated the internal module to now respond to KILL_CMD so it can now be
signaled to terminate gracefully.
-the add_mod command now requires the -mod_path argument as it should.
-the session now filter out bad NEW_CMD frames based on bad command names and incorrect
frame sizes.
-modules running in list mode can now send ERR frames to the session to log error
messages to the host database.
