Use IW_NumOuts consistently inside associate block #452

Job	Run time
build-postlib-release	11m 6s
build-all-debug-single	3m 34s
build-all-debug	7m 0s
build-drivers-release	5m 25s
build-test-uadriver-debug	2m 2s
rtest-module-drivers	5m 0s
rtest-modules-debug	11m 9s
build-fastfarm-release	13m 9s
build-interfaces-release	5m 6s
build-openfast-release	5m 3s
rtest-OF	15m 26s
rtest-OF-5MW_OC3Mnpl_DLL_WTurb_WavesIrr	2m 19s
rtest-OF-5MW_Land_BD_DLL_WTurb	2m 37s
rtest-OF-5MW_Land_AeroMap	1m 27s
rtest-OF-5MW_OC3Trpd_DLL_WSt_WavesReg	5m 11s
rtest-OF-5MW_OC4Semi_WSt_WavesWN	1m 39s
rtest-OF-5MW_OC4Jckt_DLL_WTurb_WavesIrr_MGrowth	2m 23s
rtest-OF-linearization	4m 29s
rtest-OF-simulink	11m 11s
rtest-interfaces	3m 43s
rtest-FF	2m 23s
	2h 1m 22s

Provide feedback