add nested boolean guard tests #62

Job	Run time
closure	13m 30s
closure_cfg	11m 34s
flambda1	11m 58s
flambda1_frame_pointers	14m 19s
flambda1_cfg	11m 50s
flambda2_debug_runtime	19m 18s
flambda2_debug_runtime_nnp	16m 14s
flambda2_nnp_o3	12m 55s
flambda2_frame_pointers_oclassic	14m 20s
flambda2_cfg	15m 26s
flambda2_macos	17m 28s
irc	15m 42s
irc_frame_pointers	13m 11s
ls	12m 53s
build_upstream_closure	16m 27s
	3h 37m 5s

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