Parameter sampled_patches does not work in coalescence mode

[frederic-michaud]

Using the following input file, we expect only three patches to be sampled, and this should be reflected in the genotype file. This is not the case.

generations	 	20	 	
patch_capacity	 	20	 	
patch_number	 	10	 	
coalescence	 	1	 	
ntrl_loci	 	2	 	
sampled_patches	 	{5 7 9}	 	
ntrl_save_genotype  1	 	

Notice that if we change coalescence from 1 to 0, we have the expected behaviour. It's a bit problematic because changing the sampling scheme is actually more useful in the coalescence mode.