Copy two data files from ruby/tests to src/google/compiler/ruby. Tests in src/google/compiler/ruby depend on these two files, but they were missed in language distributions other than ruby

3.0.0 alpha 3 windows fix

Fix c++ on windows

Fix C2385: ambiguous access to parent classes' member without specifying

Add missing files to *.vcproj

Clean up *.vcproj files

Update version number to 3.0.0-alpha-3

Undef GOOGLE_PROTOBUF_MISSING_HASH after it is used.

Objective C Second Alpha Drop

- Style fixups in the code.
- map<> serialization fixes and more tests.
- Autocreation of map<> fields (to match repeated fields).
- @@protoc_insertion_point(global_scope|imports).
- Fixup proto2 syntax extension support.
- Move all startup code to +initialize so it happen on class usage and not app startup.
- Have generated headers use forward declarations and move imports into generated code, reduces what is need at compile time to speed up compiled and avoid pointless rippling of rebuilds.

down-integrate internal changes

Add default import paths for descriptor.proto and well-known protos.

Include well-known types in Java runtime.

Change-Id: I816fe2fac7fccbcd96dd8510c7c9b5e7996aeadc

Change-Id: I4afa295de4c8ed2a4cd0919cf84aedcd1327d9a5

Adds a podspec for the proto3 Objective-C runtime.

Getting the ObjC generator building on Windows.

Solves AOT compilation issue for Unity - iOS

added concrete IEqualityComparer<ExtensionIntPair> implementation in ExtensionRegistryLite.cs to prevent AOT compilation issue with unity in iOS

Marked compiler literal unsigned.

C# travis integration

When compiling a protobuf with gcc 3.3.2 for powerpc, I ran into the
following warning message:

INFO: From Compiling my_proto.pb.cc powerpc-603e-linux-gcc:
bazel-out/local_linux-dbg/genfiles/my_proto.pb.cc: In member
   function `virtual void MyProto::Clear()':
   bazel-out/local_linux-dbg/genfiles/my_proto.pb.cc:223: warning: this
      decimal constant is unsigned only in ISO C90

The line in the proto file that was triggering it was:

  if (_has_bits_[24 / 32] & 4278190080) {
    ZR_(field1_, field2_);
  }

_has_bits_ is a uint32.  The constant mask should therefore be
unsigned.  This change updates the constant to be generated as
unsigned.

Remove the ClassList support (maybe bring it back in the future).
Trim the includes to hopefully get a working Window build.
Add some more returns after switches for compilers that warn even when all values of the enum are handled.
Use ghtonl instead of htonl.
Change the use of [u]int(8,32)_t within the ObjC generator code to [u]int(8,32) to match the rest of the compiler.
Add objective-c generator files to Visual Studio project.

Ruby C extension speedup: don't re-intern constant string needlessly.

Also fixed lines with > 80 char length.

Generate *all* protos in the script, applying fixups.

Update MRI C Ruby extension to use new version of upb (with upb_env).