build

move utils to seperate file #183

Job	Run time
openad (global_ocean.90x40x15)	9m 6s
doc_latex	3m 36s
forward (offline_exf_seaice)	4m 24s
doc_html	1m 58s
forward (global_ocean.cs32x15)	3m 32s
openad-other	0s
forward (tutorial_deep_convection)	2m 38s
forward (aim.5l_cs)	1m 39s
forward (isomip)	3m 16s
forward (global_ocean.90x40x15)	1m 59s
forward (tutorial_plume_on_slope)	1m 34s
forward (tutorial_advection_in_gyre)	1m 18s
forward (hs94.cs-32x32x5)	1m 33s
forward (tutorial_global_oce_biogeo)	1m 35s
forward (tutorial_global_oce_in_p)	1m 20s
forward (tutorial_cfc_offline)	1m 10s
	40m 38s

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