am 6f916664: am 735628e8: am 2ff8919d: Merge changes I7e809264,I504cea21,Ibd2165e6

* commit '6f9166640a62f694a257a307284ea1c442f66a7b':
  build: add core_64_bit.mk
  build: reverse abi list when TARGET_PREFER_32_BIT_APPS is set
  build: split TARGET_PREFER_32_BIT for apps and executables