Fix for massive memory usage on snpstats
Fix for massive memory usage on snpstats

Ensembl/ensembl,mjg17/ensembl,at7/ensembl,james-monkeyshines/ensembl,mjg17/ensembl,willmclaren/ensembl,muffato/ensembl,at7/ensembl,Ensembl/ensembl,danstaines/ensembl,Ensembl/ensembl,muffato/ensembl,Ensembl/ensembl,muffato/ensembl,james-monkeyshines/ensembl,mjg17/ensembl,muffato/ensembl,james-monkeyshines/ensembl,danstaines/ensembl,james-monkeyshines/ensembl,danstaines/ensembl,at7/ensembl,willmclaren/ensembl,at7/ensembl,mjg17/ensembl