DataWatch: Pass all _func calls through _log_func_exception
watchers: Add ability to pass WatchedEvent to function

Provide a new flag for DataWatch and ChildWatch __init__, send_event,
that if set to true, the WatchEvent is passed to the decorated
function. In case of the first call or when calling the function upon
returning from a disconnect, this event is set to None.

The commit won't break existing use of the watchers as the send_event
defaults to False.

References GH-79.
add timeout param to Lock
Handle non-deserializable connect response

This problem has been seen sporadically in production but the
exact cause is not clear. Occasionally the client receives
a connect response that it cannot deserialize. This results
in an error and leaves the client in a zombie state where it
no longer attempted to reconnect.

With this change we catch errors and raise a ConnectionDropped
error. This is caught by the outer connection loop and the client
continues attempting to reconnect.
Merge pull request #95 from labisso/connect_deserialize

Handle non-deserializable connect response
make Close and Ping print the same as the rest

This makes the log message look like

Sending request: Ping()

instead of

Sending request: <class 'kazoo.protocol.serialization.Ping'>

Constructing a Ping object for each ping generates a lot of unnecessary
temporary objects, though, so this also creates a singleton object to
use for it.

It makes the equivalent change to Close for consistency's sake.
fix connection dropped message
Added path modifiers for java to pick up on Windows
fix pipe leftover data
Add test for issue #94
Changelog entries for issues #94 and #95
Merge pull request #86 from novas0x2a/logging2

Split out the uncontroversial logging changes
Patch for Kazoo issue #87 (https://github.com/python-zk/kazoo/issues/87)
Add issue #87 to changelog
Merge pull request #93 from DataDog/lock-timeout

add timeout param to Lock
Fixed KazooTestHarness on Windows
SIGUSR1 is not available on Windows
brush up lock docs a bit
order imports
Merge pull request #96 from mrtheb/master