Replaces calls to socket.send() (which isn't guaranteed to send all data)
with the new socket.sendall() method.

(This one was trivial -- no actual string. references in it!)

fixed typo in ihooks docstring

This fixes a bunch of socket.connect(host, post) calls.  Note that I
haven't tested all modules -- I don't have enough servers here...

who writes:

Here is batch 2, as a big collection of CVS context diffs.
Along with moving comments into docstrings, i've added a
couple of missing docstrings and attempted to make sure more
module docstrings begin with a one-line summary.

I did not add docstrings to the methods in profile.py for
fear of upsetting any careful optimizations there, though
i did move class documentation into class docstrings.

The convention i'm using is to leave credits/version/copyright
type of stuff in # comments, and move the rest of the descriptive
stuff about module usage into module docstrings.  Hope this is
okay.

- fix type_to_name(); it never worked
- add path_to_selector()
add path_to_datatype_name()