Based on pull request feedback. See commit 60c52222 for why the pthread
header is necessary.

Fixes compilation when -Wunused-private-field is enabled (e.g., when
using -Wall).

The issue occurs when the template type deduction results in NodeType
being const.

Shortened version of compile error:

no matching function for call to 'operator new'
      new (p) NodeType(std::forward<Args>(args)...);

candidate function not viable: no known conversion from 'const
std::__1::basic_string<char, std::__1::char_traits<char>,
std::__1::allocator<char> > *' to 'void *' for 2nd argument; take the
address of the argument with &
inline __attribute__ ((__visibility__("hidden"), __always_inline__))
void* operator new (std::size_t, void* __p) noexcept {return __p;}

cmake targets that depend on these libraries will automatically have
these include directories.

When GOOGLE_PROTOBUF_NO_THREADLOCAL is defined, classes that depend on
pthread functions are included (such as ThreadLocalStorage).

Update minimal ios and osx version for deployment.

Remove two unused functions.

Add packTo and unpackFrom in google.protobuf.Any.

The previous two methods make it easy to transform between any and normal message.
unPackeTo will throw error if the type url in any doesn't match the type of the message to be transformed to.
is checks any's type url matches the give GPBMessage type.

Update addressbook.proto and examples code to proto3

Let GOOGLE_COMPILE_ASSERT use static_assert if available.

Added Ruby to conformance tests.

Change-Id: If7b1cc0f03f609a7f43ddafc8509b44207c60910

Change-Id: Id008ebac5159f773e1bde8b85acb2626cbd16de8

Addming missing includes in stubs headers.

This is to prepare removing those additional headers in common.h

Change-Id: I707d6d8eaf193eb28195a827c7fec738b968ab3e

The motivation is that gcc 4.8+ and clang trunk warn on unused local
typedefs, which COMPILE_ASSERT adds. After this change, the warning
will be happy at least in C++11 builds. static_assert also produces a
slighly nicer diagnostic than the typedef method.

https://github.com/google/re2/commit/eb93e8bc43ac8d05322fb3e9fc885898ad924f8a
did the same change in re2.

Split up common.h headers

ignore UTF-8 BOM

Change-Id: I75459b8b6562c3ac58fa4b1e4513accdda43ad64

Change-Id: I5f6cbc2430200e3751ad754cc7ae604338db6f91

Change-Id: Ifbc415755266ba3d0ffa5661fcd7c7d2e3b32a22

Change-Id: I223783111d743aa5193bf70fa1b9b54c7b4389c3

This involved fixing a few important bugs in the
Ruby implementation -- mostly cases of mixing
upb field types and descriptor types (upb field
types do not distinguish between int/sint/fixed/sfixed
like descriptor types do).

Also added protobuf-specific exceptions so parse
errors can be caught specifically.

Change-Id: Ib49d3db976900b2c6f3455c8b88af52cfb86e036

Install google/protobuf/stubs/status.h, and google/protobuf/stubs/stringpiece.h -- these are required in order to include google/protobuf/util/type_resolver.h.

Install google/protobuf/stubs/bytestream.h -- this is required in order to include google/protobuf/util/json_util.h.

remove pbconfig from extract script

Change-Id: I5049da7449cbada781aa1e23485a336b584802cb

Added support for JSON and valid input to conformance tests.

This was enabled by the recent open-sourcing of JSON
support and MessageDifferencer.

MessageDifferencer allows the conformance suite to expand
because it allows us to write tests for payloads that parse
successfully.  To verify the testee's output payload, we
need to parse it back into a message and compare the message
instances.  Comparing output bytes vs. a golden message is
*not* valid, because protobufs do not have a canonical
encoding (especially in the presence of maps, which have
no prescribed serialization order).

We only add one small JSON test for now, but with the
framework in place we now have the foundation to dramatically
expand the coverage of the conformance test suite.

Also added the ability for the testee to skip tests that
exercise features that are unimplemented.  This allows
Java (which currently has no JSON support) to skip tests
involving JSON.

Change-Id: I697b4363da432b61ae3b638b4287c4cda1af4deb

Internal local modifications.