Set samtools sort's exit status from errors
Set samtools sort's exit status from errors

If bam_merge_core2() fails, this needs to be reflected in the exit status.

Kontakter/samtools,mcshane/samtools,Kontakter/samtools,Kontakter/samtools,Kontakter/samtools,mcshane/samtools,mcshane/samtools,mcshane/samtools,mcshane/samtools,mcshane/samtools,Kontakter/samtools