Update to 3.4.0

[ocefpaf]

No description provided.

[ocefpaf]

Python 2.7 is failing on Windows with:

C:\bld\protobuf_1503290160041\work\protobuf-3.4.0\src\google\protobuf\stubs\io_win32.cc(206) : error C2039: 'back' : is not a member of 'std::basic_string<_Elem,_Traits,_Ax>'
        with
        [
            _Elem=char,
            _Traits=std::char_traits<char>,
            _Ax=std::allocator<char>
        ]
C:\bld\protobuf_1503290160041\work\protobuf-3.4.0\src\google\protobuf\stubs\io_win32.cc(212) : error C2039: 'unique_ptr' : is not a member of 'std'
C:\bld\protobuf_1503290160041\work\protobuf-3.4.0\src\google\protobuf\stubs\io_win32.cc(212) : error C2143: syntax error : missing ';' before '<'
C:\bld\protobuf_1503290160041\work\protobuf-3.4.0\src\google\protobuf\stubs\io_win32.cc(212) : error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
C:\bld\protobuf_1503290160041\work\protobuf-3.4.0\src\google\protobuf\stubs\io_win32.cc(212) : error C2143: syntax error : missing ';' before '{'
C:\bld\protobuf_1503290160041\work\protobuf-3.4.0\src\google\protobuf\stubs\io_win32.cc(212) : error C2447: '{' : missing function header (old-style formal list?)
C:\bld\protobuf_1503290160041\work\protobuf-3.4.0\src\google\protobuf\stubs\io_win32.cc(221) : error C2039: 'unique_ptr' : is not a member of 'std'
C:\bld\protobuf_1503290160041\work\protobuf-3.4.0\src\google\protobuf\stubs\io_win32.cc(221) : error C2059: syntax error : ']'
C:\bld\protobuf_1503290160041\work\protobuf-3.4.0\src\google\protobuf\stubs\io_win32.cc(222) : error C2065: 'wbuf' : undeclared identifier
C:\bld\protobuf_1503290160041\work\protobuf-3.4.0\src\google\protobuf\stubs\io_win32.cc(222) : error C2228: left of '.get' must have class/struct/union
        type is ''unknown-type''
C:\bld\protobuf_1503290160041\work\protobuf-3.4.0\src\google\protobuf\stubs\io_win32.cc(223) : error C2065: 'wbuf' : undeclared identifier
C:\bld\protobuf_1503290160041\work\protobuf-3.4.0\src\google\protobuf\stubs\io_win32.cc(223) : error C2228: left of '.get' must have class/struct/union
        type is ''unknown-type''
C:\bld\protobuf_1503290160041\work\protobuf-3.4.0\src\google\protobuf\stubs\io_win32.cc(327) : error C2039: 'unique_ptr' : is not a member of 'std'
C:\bld\protobuf_1503290160041\work\protobuf-3.4.0\src\google\protobuf\stubs\io_win32.cc(327) : error C2059: syntax error : ']'
C:\bld\protobuf_1503290160041\work\protobuf-3.4.0\src\google\protobuf\stubs\io_win32.cc(328) : error C2065: 'wmode' : undeclared identifier
C:\bld\protobuf_1503290160041\work\protobuf-3.4.0\src\google\protobuf\stubs\io_win32.cc(328) : error C2228: left of '.get' must have class/struct/union
        type is ''unknown-type''
NMAKE : fatal error U1077: 'C:\PROGRA~2\MICROS~1.0\VC\bin\cl.exe' : return code '0x2'
Stop.
NMAKE : fatal error U1077: '"C:\Program Files (x86)\Microsoft Visual Studio 9.0\VC\BIN\nmake.exe"' : return code '0x2'
Stop.
NMAKE : fatal error U1077: '"C:\Program Files (x86)\Microsoft Visual Studio 9.0\VC\BIN\nmake.exe"' : return code '0x2'
Stop.

I am incline to skip it instead of patching.

[hajapy]

Seems like those are c++11 only features. Officially this was only supposed to begin being the case as of 3.5.0 (see https://github.com/google/protobuf/releases/tag/v3.4.0), so while this is probably technically an upstream bug, I doubt there will be much appetite for fixing it. I'd be ok with skipping the 2.7 windows build as it is an upstream issue.

[conda-forge-linter]

Hi! This is the friendly automated conda-forge-linting service.

I just wanted to let you know that I linted all conda-recipes in your PR (recipe) and found it was in an excellent condition.