Merge branch 'backport-android-info-variables' into release

Help/manual/cmake-toolchains.7.rst

Help/manual/cmake-variables.7.rst

Help/variable/CMAKE_ANDROID_NDK_TOOLCHAIN_HOST_TAG.rst

Help/variable/CMAKE_ANDROID_NDK_TOOLCHAIN_VERSION.rst

Help/variable/CMAKE_LANG_ANDROID_TOOLCHAIN_MACHINE.rst

Help/variable/CMAKE_LANG_ANDROID_TOOLCHAIN_PREFIX.rst

Help/variable/CMAKE_LANG_ANDROID_TOOLCHAIN_SUFFIX.rst

Modules/Platform/Android/Determine-Compiler-NDK.cmake

Modules/Platform/Android/Determine-Compiler-Standalone.cmake

Modules/Platform/Android/Determine-Compiler.cmake

Tests/RunCMake/Android/common.cmake