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merge, ... gmock-matchers test

Merging matchers test

More on MSVC warning C4503, decorated name length exceeded

Fixing build break on MSVC

merging gmock matchers 1

This makes it easier to use GTest in projects that build with the
-Wmissing-declarations warning. This fixes the warning in headers and
source files, though not GTest's own tests as it is rather noisy there.

This merges a Google-internal change (117235625).

Original CL description:
This CL was created manually in about an hour with sed, a Python script
to find all the places unqualified 'string' was mentioned, and some help
from Emacs to add the "std::" qualifications, plus a few manual tweaks.

The helper needs to be templated because its argument type can’t be
known. FloatingPointTest is instantiated with RawType = float and
RawType = double, so Bits will be an unsigned 32-bit or 64-bit type.
size_t will be either 32 or 64 bits depending on the system’s
definition, typically based on pointer size.

This fixes these warnings:

…\gtest\googletest\test\gtest-port_test.cc(78) : error C2220: warning treated as error - no 'object' file generated
…\gtest\googletest\test\gtest-port_test.cc(78) : warning C4309: 'static_cast' : truncation of constant value
…\gtest\googletest\test\gtest-port_test.cc(79) : warning C4309: 'static_cast' : truncation of constant value

…\gtest\googlemock\test\gmock-matchers_test.cc(2712) : error C2220: warning treated as error - no 'object' file generated
        …\gtest\googlemock\test\gmock-matchers_test.cc(2706) : while compiling class template member function 'testing::gmock_matchers_test::FloatingPointTest<float>::FloatingPointTest(void)'
        …\gtest\googlemock\test\gmock-matchers_test.cc(2896) : see reference to function template instantiation 'testing::gmock_matchers_test::FloatingPointTest<float>::FloatingPointTest(void)' being compiled
        …\gtest\googlemock\test\gmock-matchers_test.cc(2896) : see reference to class template instantiation 'testing::gmock_matchers_test::FloatingPointTest<float>' being compiled
…\gtest\googlemock\test\gmock-matchers_test.cc(2712) : warning C4267: 'argument' : conversion from 'size_t' to 'const unsigned int', possible loss of data
…\gtest\googlemock\test\gmock-matchers_test.cc(2714) : warning C4267: 'argument' : conversion from 'size_t' to 'const unsigned int', possible loss of data
…\gtest\googlemock\test\gmock-matchers_test.cc(2716) : warning C4267: 'argument' : conversion from 'size_t' to 'const unsigned int', possible loss of data
…\gtest\googlemock\test\gmock-matchers_test.cc(2717) : warning C4267: 'argument' : conversion from 'size_t' to 'const unsigned int', possible loss of data
…\gtest\googlemock\test\gmock-matchers_test.cc(2718) : warning C4267: 'argument' : conversion from 'size_t' to 'const unsigned int', possible loss of data
…\gtest\googlemock\test\gmock-matchers_test.cc(2721) : warning C4267: 'argument' : conversion from 'size_t' to 'const unsigned int', possible loss of data
…\gtest\googlemock\test\gmock-matchers_test.cc(2723) : warning C4267: 'argument' : conversion from 'size_t' to 'const unsigned int', possible loss of data

https://github.com/google/googletest/issues/610

This guards use of <type_traits> and its features with
GTEST_HAS_STD_TYPE_TRAITS_, and std::function with
GTEST_HAS_STD_FUNCTION_.

Also update gmock_doctor due to Clang wording change.

Also fix bogus MSVC warning about "alignment of a member was sensitive to packing".
Also bring in gtest 701.

Distinguish between C++11 language and library support for std::function, std::begin, std::end, and std::move in gtest and gmock.
Bring in gtest 694.

Defines the UnorderedPointwise(m, container) matcher, which is like Pointwise(m, container) but ignores the order of the elements.