Added getModeBin() method. Refactored getMode() and trim(..) to use it.
Added getModeBin() method. Refactored getMode() and trim(..) to use it.

broadinstitute/picard,nh13/picard,alecw/picard,nh13/picard,nh13/picard,alecw/picard,annkupi/picard,broadinstitute/picard,alecw/picard,alecw/picard,nh13/picard,annkupi/picard,annkupi/picard,broadinstitute/picard,annkupi/picard,broadinstitute/picard,broadinstitute/picard