Usage :
./prune_decomps.pl --decomp-prune-dir=<PRUNE_DECOMP_DIR> 
	OR
./prune_decomps.pl <PRUNE_DECOMP_DIR> 
The above commands can be used to remove duplicate decomposition
files in <PRUNE_DECOMP_DIR> 
Available options : 
	--decomp-prune-dir : Directory that contains the decomp files to be pruned
	--exe      : Executable that generated the decompositions 
	--dry-run  : Run the tool and only print (without pruning) dup decomp files
	--verbose  : Verbose debug output