Conflicts:
	python/setup.py

Conflicts:
	python/google/protobuf/internal/message_factory_test.py
	python/google/protobuf/internal/reflection_test.py
	python/google/protobuf/internal/text_format_test.py

Use stdlib's 'unittest' instead.

- Remove PY25 cruft.

- Selectively apply cleanups from 'python-modernize':

  - New exception syntax.
  - Use 'six' to handle module renames.
  - Use 'six' to handle text / binary stuff.

This PR covers most of the work from #66 which falls inside `python`
(rather than the Python code generation stuff in 'src').

Include names.h as java_names.h in the opensource tree

Update python version / setuptools instructions

 Add __version__

Improved little endian byte order detection

Reflect the change that protobuf should now only be supporting 2.6+ (I'd guess note python 3.x+ when its supported in implementation)

Refer to the Python Packaging User Guide for installing setuptools (and pip) instead of out of date telecommunity guide.

Including <sys/param.h> on Mac/iOS doesn't define __BYTE_ORDER so
PROTOBUF_LITTLE_ENDIAN was never being defined. This commit adds a check
for the __LITTLE_ENDIAN__ macro which is defined by clang and Apple gcc on
little endian architectures.

Support Ruby code generation only for proto3.

Update Ruby build setup to produce gems successfully. Include upb as a single .c / .h file.

system. The Ruby module build now uses an amalgamated distribution of
upb, and successfully builds a Ruby gem called 'google-protobuf' with
module 'google/protobuf'.

Source code refactoring. Extracted common functionality in cpp_helpers.c...

Returned print_indent and print_outdent back to printservicestub and printserviceclass in python generator

Make C++ code generation of string oneof field compatible with C++11

Conflicts:
	configure.ac