Added get_all_homologous_Genes to Bio::EnsEMBL::Gene that returns the Bio::EnsEMBL::Gene and Bio::EnsEMBL::Compara::Homology objects for each corresponding homologous gene in the Compara DB. Changed EnsEMBL::Web::Data::Gene to use this call with the benefit that the Compara DB gets hit obce only per GeneView request

allow isa check also. Xref system uses a dbadptor as base class so has a different name but still isa

Implemented store method for Marker objects in MarkerAdaptor, and added recursive store functionality to MarkerFeatureAdaptor

forward strand and "throw"ed on the reverse strand! Made them both
warnings.

Added a use Bio::EnsEMBL::Utils::Exception statement as some of the method e.g throw from this module are used

Now can parse a locator with space character in it. Needed as when using Registry with multiple species one needs to specify e.g. -species "Homo sapiens"