merge the linking of netcdf and hdf5 libraries #313

Job	Run time
ucvm-build-cvmh-taper (3.7)	2m 12s
ucvm-build-cvms-cvmh (3.7)	2m 47s
ucvm-build-albacore-cvlsu-ivlsu-wfcvm (3.7)	2m 33s
	7m 32s

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