This actually has always been using the first branch because
`__cpluscplus` is not a real definition (contrast with the real spelling
of `__cplusplus`).

* add wrapper type helpers

* add check for _as_value suffix

* add implicit time conversion

* add duration

* add init test

* more tests

* add type check and alternative c type check

* add rational and bigdecimal

* use rb_obj_is_kind_of

* use native time check

* chain implicit conversions

* remove unused variable

I've deprecated the separate web page for the project and moved everything to `README.md`, so for now it's better to point to the GitHub project page.

Down integrate to Github

Signed-off-by: Mickaël Schoentgen <contact@tiger-222.fr>

The bazel-bin/ and bazel-genfiles/ directories are going to be merged
soon. That change was causing some test failures on Windows, and I
believe it is because the logic for locating test data files was getting
confused and mistakenly looking for them under bazel-bin/. This commit
updates that logic to look for a more specific file (descriptor.cc)
which does not appear under any Bazel-related directories.

It sounds like the more official solution is to use the Bazel runfiles
library (i.e. //tools/cpp/runfiles). However, I decided not to do that
because we currently still support multiple build systems, and if we
used a separate solution for Bazel then I suspect we would need even
more #ifdefs in the code to handle the different systems.

Undelete python/google/protobuf/pyext/proto2_api_test.proto that was accidentally removed from file_list

* add check for reserved keywords in extensions

* add all reserved keywords

* use string without std::

* add test and update name in lite version

* test updates

also add useful Span-based methods for ByteString

Revert "Updating Iterators to be compatible with C++17 in MSVC"

Update CONTRIBUTING.md to recommend applying the appropriate labels

Make the C# benchmarks non-packable

C# testing improvements

* add terminating character

* adjust name length input

* add test cases

* correct script name

* Misc fixes

* add new script to EXTRA_DIST list

For reasons I don't follow, when passing CXXFLAGS to configure, the build
ends up breaking because something along the way fails to detect C++11
support within the third_party/googletest part of the build.