* Enable --gen-onefile in Python
Made it possible to generate all python code in one file. Modified
py_test.py so that it can switch between the multi-file code and
the one-file code.
Updated PythonTest.sh and py_test.py so that the multi-file code
and the one-file code can be tested based on the same test code.
* Sync with google/flatbuffers
* Add --gen-onefile to generate_code.py
* Add codegen test for namespaced unions
* [Rust] Handle cross-namespace union use
* [Rust] Test namespace handling
* [Rust] Drop trailing whitespace in codegen
* [Rust] Set flags in generate_code.bat to match .sh
* [C#] Add additional namespace test file
