Fixup download URL for CTD. Old URL results in 403 permanent redirect, which is silently ignored
Merge pull request #229 from amarillion/amarillion

Fixup download URL for CTD. Old URL results in 403 permanent redirect, w...
Use DownloadSingle in ctd
Use DownloadSingle for affymetrix
Use DownloadSingle in gene
Use DownloadSingle in hgnc
Use DownloadSingle in NDC - also fix undefined varable use
Use DownloadSingle in sgd
Use DownloadSingle in mgi
Use DownloadSingle for PharmGkb
Merge pull request #230 from amarillion/amarillion-002-downloadsingle-usage

Amarillion 002 downloadsingle usage
Make omim.php give up after 10 failed downloads in a row
sgd - increase memory limit
ctd: kegg_pathway identifiers fix
Use DownloadSingle in drugbank
Entrez gene: refseq and go identifier fixes
Use DownloadSingle in iproclass
iproclass: go identifier fix
irefindex: Do not ignore value of downloadUrl. Use DownloadSingle.
Increase memory limit and fix mi identifiers