bam_plcmd.c: more descriptive -b usage help message
bam_plcmd.c: more descriptive -b usage help message

lh3/samtools-legacy,kdmurray91/samtools,lh3/samtools-legacy,Kontakter/samtools,lh3/samtools-legacy,dondelelcaro/samtools,lh3/samtools-legacy,kdmurray91/samtools,mcshane/samtools,mcshane/samtools,dondelelcaro/samtools,mcshane/samtools,mcshane/samtools,Kontakter/samtools,dondelelcaro/samtools,Kontakter/samtools,kdmurray91/samtools,mcshane/samtools,dondelelcaro/samtools,lh3/samtools-legacy,Kontakter/samtools,dondelelcaro/samtools,kdmurray91/samtools,kdmurray91/samtools,Kontakter/samtools,mcshane/samtools