Txjson-rpc

* Added authentication support with cred for twisted.web2-based JSON-RPC
reources.
* Updated history file.
* Added test case for auth imports.

* Reverted trunk to pre-version-work point.
* Cherry-picked the change that added missing deferred returns in two tests.
* Cherry-picked the change that added the testing helper subpackage.
* Cherry-picked the change that added the doctest runner.
* Cherry-picked changes to the examples and updated the example-runner.
* Added authentication infrasturcture so that twisted.web-based txJSON-RPC
servers can be written to support twisted.cred.

* Added support for version 1.0 of the JSON-RPC spec to jsonrpclib.
* Finished the pre-version 1.0 spec.
* Updated the version 1.0 spec with response examples.
* Updated web and web2 JSON-RPC to extract and pass the id and version
parameters.

* Updated the QueryFactory to take a version parameter in the constructor.
* Added a payload creator that uses the version to determine which payload to
build.
* Changed the constructor to use a new private method for creating the payload.
* Changed the async Proxy classes in web and netstring to accept a version
parameter in the constructor as well as in the callRemote method.
* Updated license file with more recent copyright info.
* Added an exmaple for web client.
* Updated netstring JSON-RPC with support for version parameters in contructor
and callRemote.
* Added a jsonrpc module for abstracting base-classes and removing redundancy
between the three JSON-RPC implementations.
* Added a BaseProxy class.
* Import cleanup.
* Moved more common methods into the base query factory class.
* Created a BaseSubhandler subclass for http and netstring RPC classes.
* Removed session code from netstring RPC test.
* Moved introspection into base module.
* Changed introspection to behave like a mixin instead of a subclass.
* Updated JSON-RPC web2 to use new base classes.
* Updated JSON-RPC web2's Introspection class to use the base introspection
class.

* Added clean.sh admin script.
* Cleaned up TODO file.
* Updated meta file with more data and incremented the version to 0.3.
* Added utils subpackage.
* Updated setup.py to use the new utils subpackage.
* Added docs.
* Updated README.
* Cleaned up lots of unused imports.
* Formatting tweaks.
* Added a call to strip for the help-string-returning methods.
* Added a maxLength attribute to QueryFactory for custom settings by users.
* Updated proxy to instantiate QueryFactory with an optional maxLength
override.
* Updated history file.
* Cleaned up examples.
* Added an admin script for testing examples.
* Updated the commit script to run the exmaple tests.
* Added missing error handling in commit script.
* Added PYTHONPATH to example runner commands.
* Removed PYTHONPATH from admin/defs.sh.
* Removed debugging echo statement from commit.sh.
* Removed manual PYTHONPATH setting in example runner.
* Formatting tweaks.
* Updated TODO and README.
* Added admin upload script.
* Added placeholders for version spec files.
* Added missing deferred returns in two tests.
* Added testing helper subpackage.
* Added doctest runner.
* Added manifest file.
* Updated the commit script to run the doctest runner.
* Added headings to the spec files.
* Added request info to the specs.
* Added versioned request functions to jsonrpclib.py and updated the
ServerProxy with a version-sensitive dispatcher.
* Removed non-pertinent sections from pre-version 1 spec.

* Added a test for None/null.
* Added a serializer for Python datetime -> JSON.
* Updated the version.
* Updated the commitAndPush script to pass the skip_tests parameter (and fixed
its filename extention).
* Added missing sudo to cleanup function.
* Removed unused clean script (and made sure that the other scripts use the
clean function).
* Converted checkBuild to function and removed script.
* Made the error function take a message parameter.
* Updated the bzr push command for svn.
* Fixed failing test for new "none" check.
* Removed sudo calls from admin scripts.
* Updated the ChangeLog with missing notes from earlier today.
* Moved version info into meta package file.