added USE_OTHER_TIME_FUNCTION in Par_file to add the Brune and Smooth Brune functions for CMTSOLUTION #186

Job	Run time
Check file changes	17s
Test on ubuntu-latest	2m 19s
Test on ubuntu-20.04	2m 16s
Test Intel on ubuntu-20.04	2m 47s
Test on Mac	17m 50s
Test run example 3 - layered halfspace	3m 22s
Test run example 0 - make tests	6m 33s
Test run example 1 - meshfem3D simple model	3m 50s
Test run example 2 - fault tpv5	5m 25s
Test run example 5 - socal1D	3m 14s
Test run example 6 - socal1D 1d_socal	3m 19s
Test run example 7 - socal1D 1d_prem	3m 23s
Test run example 10 - homogeneous halfspace	2m 41s
Test run example 11 - poroelastic	3m 5s
Test run example 12 - PML elastic	2m 41s
Test run example 13 - PML acoustic	2m 31s
Test run example 14 - waterlayered halfspace	3m 39s
Test run example 15 - tomographic model	2m 51s
Test run example 16 - cavity	2m 26s
Test run example 4 - small adjoint	2m 22s
Test run example 8 - socal1D 1d_cascadia	3m 10s
Test run example 9 - coupling FK	3m 30s
Test run example 17 - sep bathymetry	3m 14s
Test run example 18 - socal1D hdf5 i/o	3m 16s
	1h 30m 1s

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