Updates to package.json: rev version, add WKT, and recateogrize dependencies

Expose JsonFormatter.WriteValue.

This isn't useful to most users, but can be handy in advanced use cases,
as requested in #1465.

The runtime doesn't depend on anything, so these
packages should always have been in devDependencies.

Remove ordering guarantees in the MapField documentation

Note: Breaking API change on the Dictionary classes.

The numeric value classes were using "Value" in the naming, but this silently
collided with the KVC category on NSObject; meaning KVC code could break up a
keypath and call these selectors with the wrong types leading to crashes (even
though the code all would compile cleanly).

- Rename the methods to use the "type" instead of literal "Value".
- Update all the impls and tests.
- Enable the warning that will catch issues like this in the future.

Fixes https://github.com/google/protobuf/issues/1616

This doesn't currently change the ordering in the implementation, but allows us to do so in the future.
We also need to change
https://developers.google.com/protocol-buffers/docs/reference/csharp-generated#singular
which states "Finally, unlike Dictionary<TKey, TValue>, MapField<TKey, TValue> preserves insertion order of entries."
(We can just remove that sentence, I think.)

Adds destination flag to xcodebuild to avoid possible flake errors

CMake Fix up prerelease version handling

JS: import well-known types from google-protobuf package.

- Better docs in the generator for the different options that can be passed
  during an invoke of protoc.
- Add named_framework_to_proto_path_mappings_path to pass the path to a file
  containing mappings of frameworks for different proto files.
- Update the generation to use the mapping to change the #import directives
  it creates.

Note: the changes in helpers is mostly moving code within the fine, and then
a small change to expose the parsing so a passed on class can consume the line.

Fixes https://github.com/google/protobuf/issues/1457

Workaround for gcc-4.4 incompatibility

constructor, and instead create an _internal_only getter
that gets the needed information. This is a workaround for
a deficiency in gcc-4.4 that does not properly support
templated friend classes.

Cleanup protobuf-module.cmake.in

CMake package requirements

Add support for generation sources into a framework.

- Add a protoc objc option (generate_for_named_framework) to set the name of
  the framework all generated sources will be in.
- Tweak some comments/naming to make it clear what is the Protobuf framework
  vs. the framework for generated code.
- Update the objc README to document the new generation option to protoc.

This is working towards https://github.com/google/protobuf/issues/1457.

Also hotwires updating ruby as CocoaPods was crashing within a support library.

Fixes #1619 

proper codeblock in README

protoc: support '=' in --proto_path arguments

CMake prerelease versioning

Build examples in CMake

Make conformance tests more strict about the failure list.