Issue #17684: Fix some test_socket failures due to limited FD passing support
on OS-X. Patch by Jeff Ramnani.
Updated pydoc topics for Python 3.4.0a1 release.
Bumped version to 3.4.0a1.
Added tag v3.4.0a1 for changeset 46535f65e7f3
Merge from v3.4.0a1 head.
Issue #17011: Fix caching of xpath path when namespaces are present.

Thanks to Stefan Behnel for the report and proposed solution & test.
Merge fix for Issue #17011 from 3.3
Issue #17902: Clarify doc of ElementTree.iterparse
Issue #17902: Clarify doc of ElementTree.iterparse and IncrementalParser

Based on patch by Aaron Oakley
Cycled Misc/NEWS for alpha 2, touched patchlevel.
Merging the 3.4.0a1 head.
Complete What's New in Python 3.4
Hum, VMS code is still present
Null merge.
Close #18635: Move class level private attribute from instance to class.
Silence compiler warning about an uninitialized variable
merge
Fixes #8860: Round half-microseconds to even in the timedelta constructor.
(Original patch by Mark Dickinson.)
Merge.
Silence compiler warning for an unused declaration