ExtLoads: update Simulink create SFunc #761

Job	Run time
build-drivers-release	5m 16s
build-all-debug-single	4m 25s
build-all-debug	6m 35s
build-postlib-release	11m 31s
build-test-uadriver-debug	2m 1s
rtest-module-drivers	2m 46s
rtest-modules-debug	5m 51s
build-interfaces-release	3m 52s
build-openfast-release	5m 26s
build-fastfarm-release	12m 27s
rtest-interfaces	5m 24s
rtest-OF	6m 46s
rtest-OF-5MW_Land_BD_DLL_WTurb	2m 7s
rtest-OF-5MW_OC3Mnpl_DLL_WTurb_WavesIrr	1m 38s
rtest-OF-5MW_Land_AeroMap	1m 14s
rtest-OF-5MW_OC4Jckt_DLL_WTurb_WavesIrr_MGrowth	1m 43s
rtest-OF-5MW_OC4Semi_WSt_WavesWN	1m 16s
rtest-OF-simulink	10m 31s
rtest-OF-5MW_OC3Trpd_DLL_WSt_WavesReg	4m 48s
rtest-OF-linearization	2m 41s
rtest-FF	1m 55s
	1h 40m 13s

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