Also removed obselte delete statements dealing with previous way of labelling projected terms (%[from%).

Clarified source ID for derived GO terms.

Fix to SQL for storing dependent xrefs as part of large graphs, sometimes wouldn't store linkage annotation (e.g. GO evidence code).

download_dir can be specified using options in xref_parser.pl

fix added ; now checks nr of entries in object_xref table as well before throwing

option -download_dir added to specify dir where the files are downloaded to

Added support for optionally projecting features to a different co-ordinate system before loading. UNTESTED (no data yet)