added Clone spacing variable
added Clone spacing variable

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