1.0.4 - fix in biobambam

Release to fix a problem in BioBamBam bammarkduplicates.

For multiple library files the statistics in the metrics file would be wrong and there could be too many reads which are marked as duplicates (duplicate marking is per library, so if you have two reads/read pairs which map to the same coordinates but which are in different libraries you would not consider those as duplicates. The program however put all the reads in one library, so there is a potential that reads are marked as duplicates which should not be. I guess this does not happen with high probability though).