fix deprecation warning from pack()
speed up zipkin backend, add trivial benchmark
oops, didn't mean to change this file...
make the statsd backend a little faster, too
disable db handlers, update config
Add a tools and setup.py files/folders
Merge pull request #2 from harlowja/master

Add a tools and setup.py files/folders
Add more deps
Merge pull request #3 from harlowja/master

Add more deps
ooops... forgot a file!
less buggy and faster way of converting IP address to signed int, also
means we don't need IPy.
fix overflow in port number
make the statsdb backend eventlet safe.  without the lock, you get
multiple concurrent write errors.
add sql query to db traces
add option to config.py to toggle db tracing
now that some backends are using eventlet, we actually need to
initialize logging twice: once for the regular logging module and once
for the eventlet patched one.
better error handling in statsd backend
eventlet safety: don't send until we've got the span stack back in a
clean state, because sending can context switch.
document how to set tomograph up with openstack, and add the patches
set the default zipkin port back to the zipkin one instead of the
scribe port, since most folks trying it out for the first time won't
be using scribe.