Bump version to 3.4.0 alpha 0.

Doc/license.rst

Doc/tutorial/interpreter.rst

Doc/tutorial/stdlib.rst

Doc/tutorial/stdlib2.rst

Include/patchlevel.h

LICENSE

Lib/distutils/__init__.py

Lib/idlelib/idlever.py

Misc/NEWS

Misc/RPM/python-3.4.spec

PC/VC6/pythoncore.dsp

PC/VC6/readme.txt

PC/VS7.1/pythoncore.vcproj

PC/VS7.1/readme.txt

PC/VS8.0/build_ssl.bat

PC/VS8.0/kill_python.c

PC/VS8.0/pyproject.vsprops

PC/VS9.0/kill_python.c

PC/VS9.0/pyproject.vsprops

PC/example_nt/example.vcproj