In is_circular(): If there is no adaptor, assume it's not circular (and warn user).
In is_circular(): If there is no adaptor, assume it's not circular (and
warn user).

Also, comment out buggy EG code in project() (see "EG BUG: FIXME").

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