[rebuild] Fix treatment of -intf option for ocamlc and ocamlopt
[rebuild] Fix treatment of -intf option for ocamlc and ocamlopt

ak3n/reason,cristianoc/reason,chenglou/reason,facebook/reason,yunxing/reason,yunxing/reason,facebook/reason,let-def/reason,cristianoc/reason,cristianoc/reason,chenglou/reason,yunxing/reason,chenglou/reason,let-def/reason,facebook/reason,yunxing/reason,ak3n/reason,let-def/reason,ak3n/reason,ak3n/reason