Allow passing POST data with a list of 2-tuples.
Fixes repeated 401s when using DigestAuth with a session
Moves num_401_calls counter to HTTPDigestAuth
Test for cookie parameters.
purported py2.6 support for cookies test.
Remove default Content-Length from GET requests.

Fix #1051.
Fix python 2.6 unittest compatability issue.
Add myself to AUTHORS.
Always add Content-Length to HTTP PATCH.
Remove Content-Length from GET/HEAD by default.

Now, Content-Length is only auto-added for non-GET/HEAD requests.
Merge pull request #1142 from theaeolianmachine/removeGETContentLength

Remove default Content-Length from GET requests.
Merge pull request #1140 from ralphbean/cookie-test

Test for cookie parameters.
Merge pull request #1123 from andrewjesaitis/master

Fixes DigestAuth with Sessions
Merge pull request #1103 from dmckeone/master

Restore the ability to use a list of 2-tuples for the data keyword argument with requests.post.