Add subparser aliases for argparse. Resolves issue 9324. Approved by Georg for beta2 on the tracker.

editline rl_initialize apparently discards any mappings done before it
is called, which makes tab revert to file completion instead of inserting
a tab.  So now on OSX we call rl_initialize first if we are using
readline, and then re-read the users .editrc (if any) afterward so they
can still override our defaults.

Patch by Ned Deily, modified by Ronald Oussoren.

from the threading module (with the internal verbose flag activated).

parameter to HTTPConnection and friends is deprecated.

Backwards compatible alternative values possible as documented.
Done by Łukasz Langa, approved by Raymond and Fred.

Before the introduction of filename arguments to compileall it gave semi useful
messages about not being able to 'list' names that weren't valid directories.
This fix restores that behavior.  In addition to the test for this case, the
patch also adds a test for the default behavior of compileall when no arguments
are provided, and fixes a bug in one of the previously added tests.

for security reasons.  Initial patch by Ross Lagerwall.