Erroneously removed a StringUtil method in previous commit
Erroneously removed a StringUtil method in previous commit

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