Updated broken and outdated URLs

.travis.yml

googlemock/docs/ForDummies.md

googlemock/docs/FrequentlyAskedQuestions.md

googlemock/scripts/upload.py

googlemock/src/gmock_main.cc

googletest/cmake/internal_utils.cmake

googletest/docs/XcodeGuide.md

googletest/docs/advanced.md

googletest/docs/faq.md

googletest/docs/primer.md

googletest/include/gtest/internal/gtest-port.h

googletest/scripts/upload.py

googletest/src/gtest-port.cc

googletest/test/gtest-death-test_test.cc

googletest/xcode/Config/DebugProject.xcconfig

googletest/xcode/Config/FrameworkTarget.xcconfig

googletest/xcode/Config/General.xcconfig

googletest/xcode/Config/ReleaseProject.xcconfig

googletest/xcode/Config/StaticLibraryTarget.xcconfig