Simplejson

* Fix additional Python 2.x compilation issue on Windows

* Improve CI to catch speedups build regressions
* Fix speedups build regression in Python 2.x
https://github.com/simplejson/simplejson/issues/193

* Workarounds for NamedTemporaryFile issues with Windows for tool tests
* Make TypeError messages contain type name instead of a repr.
https://github.com/simplejson/simplejson/pull/191
* Ensure that encoding of text subtypes is consistent with or without speedups
https://github.com/simplejson/simplejson/issues/185

* Misc updates to build infrastructure
* Fix an assertion failure when make_encoder receives a bad encoder argument
https://github.com/simplejson/simplejson/pull/188
* Fix potential crash during GC
https://github.com/simplejson/simplejson/pull/187
* Fix a reference leak when sorting keys
https://github.com/simplejson/simplejson/pull/186

* Fix threaded import race condition
https://github.com/simplejson/simplejson/issues/184
* Move RawJSON implementation to simplejson.raw_json module
* Move JSONDecodeError implementation to simplejson.errors module

* Fix issue with item_sort_key when speedups are available, and add
auto-discovery to test suites to prevent similar regressions
https://github.com/simplejson/simplejson/issues/173