add ranksplit option to bam12auxmerge
refactor bam12strip
add rankstrip option for bam12auxmerge
refactor bamclipreinsert
fix include recursion
add clipreinsert option for bam12auxmerge
refactor bamzztoname
add zztoname option for bam12auxmerge
enable options ranksplit, rankstrip, clipreinsert and zztoname of bam12auxmerge by default