Merge branch 'hotfix' into develop
Resets version to 0.11a1.
url_test.py: Adds tests for javascript URLs.
engine.py: Removes table count debug msg. Closes chfoo/wpull#18.
http.Connection: Uses invalid content length as no length.

Tries and waits until the connection closes. Closes chfoo/wpull#17.
database: Creates an index on status.
url.URLInfo.parse: Simplifies schemeless URL logic.
url.py: Adds urljoin() that supports URLs begining with double slashes.
document.py: Uses wpull.util.urljoin().
Backports urlparse.py for Python 2.6.
Bumps version to 0.10.8.

Merge branch 'develop'

Conflicts:
	wpull/version.py