Removed a bug in get_all_alt_locations for negative strand cases.
Removed a bug in get_all_alt_locations for negative strand cases.

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