Turn off use of proxy if URL is FTP and contains globbing characters.
Turn off use of proxy if URL is FTP and contains globbing characters.

This allows us to pick up the RefSeq release documentation, which is
located in a file called 'RefSeq-releaseNN.txt' (where 'NN' is the
release number), by downloading 'RefSeq-release*.txt'.

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