Change-Id: I6a5078b6bcdf4637e11c1cb9da1f74298e6fc26e

* PHP: support 7.0

* Also fix in test_util.php

[skip ci]

Change-Id: I1ba6f6372a08b5796570851336e1a548602f60da

Change-Id: I3ff47358e66965cab34736eed2a477ae29f02f61

This is necessary so that the CMake build knows to include this header
file in the installation include/ directory.

Currently deserialization of a non-packed binary repeated field is quadratic in
the number of elements, because each time we parse a new element we copy over
all elements we have parsed so far. This CL fixes the performance problem by
having the generated deserialization code just call addX() instead of using
getX() and setX().

Had to strip out some JSPB-format test code,
but also added some .proto test messages that
had been improperly stripped out.

Silence compile warnings in bazel

Remove missing files from build.

Set platform to "java" under JRuby

Update the ObjC projects for Xcode 8

- Let Xcode 8 update settings on the projects/schemes.
- Migrate Swift tests to Swift 3 syntax.
- Update the build/test script:
  - Require Xcode 8 (because of the Swift 3 requirement for tests)
  - Update the devices to what Xcode 8 has (8.x simulator seem to fail even
    though they can be downloaded in Xcode 8)
- Update the travis images to ones with Xcode 8.

Updated .gitignore with Java and JavaScript build artifacts

Uses values from the removed `Gemfile.lock` as a baseline for version requirements, though it has been observed to work with the latest versions of all the referenced gems - see https://travis-ci.org/google/protobuf/builds/163625616 for details

Avoid [failures in travis](https://travis-ci.org/google/protobuf/jobs/163611664) under jruby

Proposed fix for #1594