Port FlatBuffers to Python.

Implement code generation and self-contained runtime library for Python.

The test suite verifies:
  - Correctness of generated Python code by comparing output to that of
    the other language ports.
  - The exact bytes in the Builder buffer during many scenarios.
  - Vtable deduplication correctness.
  - Edge cases for table construction, via a fuzzer derived from the Go
    implementation.
  - All code is simultaneously valid in Python 2.6, 2.7, and 3.4.

The test suite includes benchmarks for:
  - Building 'gold' data.
  - Parsing 'gold' data.
  - Deduplicating vtables.

All tests pass on this author's system for the following Python
implementations:
  - CPython 2.6.7
  - CPython 2.7.8
  - CPython 3.4.2
  - PyPy 2.5.0 (CPython 2.7.8 compatible)

python/setup.py

@@ -0,0 +1,17 @@
+from setuptools import setup
+
+setup(
+    name='flatbuffers',
+    version='0.1',
+    license='BSD',
+    author='FlatBuffers Contributors',
+    author_email='me@rwinslow.com',
+    url='https://github.com/google/flatbuffers/python',
+    long_description=('Python runtime library and code generator for use with'
+                      'the Flatbuffers serialization format.'),
+    packages=['flatbuffers'],
+    include_package_data=True,
+    requires=[],
+    description=('Runtime library and code generator for use with the '
+                 'Flatbuffers serialization format.'),
+)