AAPT2 can be invoked through JNI by loading the libaapt2_jni.dll library
in the JVM. Provide a 64-bit version of libaapt2_jni.dll for 64-bit
JVMs.
Fixes: 150355628
Test: manually inspect sdk-repo-windows-build-tools-*.zip
Change-Id: Iebf1ded45d0c2901f0f3905f2b37a8801c378a4e