MANTA-67 add FLAGS to facilitate gyp in 64bit
MANTA-67 add FLAGS to facilitate gyp in 64bit

joyent/manatee,GrimDerp/manatee,GrimDerp/manatee,josephglanville/manatee,joyent/manatee,AmlingPalantir/manatee,josephglanville/manatee,AmlingPalantir/manatee