Updated pydoc topics.py for 3.4a3 release.
Version bump to 3.4.0a3.
Added tag v3.4.0a3 for changeset dd9cdf90a507
Post-version release cleanup.
Merge 3.4.0a3 release changes.
Minor code improvement. Review comment by Eric V. Smith
merge from 3.3
Issue #19106: Touch generated files to be 1s newer than their youngest source.
Merge 3.3
Issue #19106: Add buildbottouch target.
Merge 3.3
Issue #19134: Make a test in inspect conditional on multiprocessing
being available.

Thanks to Remi Pointel for the bug report.
Add a "skull and crossbones" to Py_AddPendingCall.
Add a "skull and crossbones" to Py_AddPendingCall.
Issue #12641: Avoid passing "-mno-cygwin" to the mingw32 compiler, except when necessary.
Patch by Oscar Benjamin.
Issue #12641: Avoid passing "-mno-cygwin" to the mingw32 compiler, except when necessary.
Patch by Oscar Benjamin.