HACK: force target art executables to be compiled for 32-bit
HACK: force target art executables to be compiled for 32-bit

64-bit dex2oat doesn't support 32-bit targets yet, force all
art executables to compile 32-bit for now.

Change-Id: If69f0a45e55104a5e915a9c58afa9009aa68b71c

treadstoneproject/artinst,treadstoneproject/artinst,treadstoneproject/artinst,treadstoneproject/artinst,treadstoneproject/artinst