32-bit NDK bug

The 32-bit versions of Android NDK r11b and r11c contain a bug that prevents it from running the prebuilt versions of tools on 64-bit machines.

When the bug triggers, building native Android libraries fails with the following message:

process_begin: CreateProcess(NULL, <...>/android-ndk-r11b/build//../toolchains/arm-linux-androideabi-4.9/prebuilt/windows-x86_64/bin/arm-linux-androideabi-gcc ...) failed.
make (e=2): The system cannot find the file specified.

You can fix it by changing the following line in <NDK>\build\core\init.mk:

HOST_TAG64 := $(HOST_OS_BASE)-$(HOST_ARCH64)

Replace it with the following

HOST_TAG64 := windows

This will force it to use 32-bit versions of tools that are actually included with that NDK release.