Draft patch SQL for 27-28. Need to agree with Arne.

sql/patch_27_28.sql

+# Patch SQL required to convert Ensembl version 27 schemas to version 28
+
+# Now have 2 separate RefSeq external_db entries
+UPDATE external_db SET db_name='RefSeq_dna' WHERE db_name='RefSeq';
+INSERT INTO external_db VALUES (1810, 'RefSeq_peptide', 1, 'KNOWN');
+
+# Modify column definition of xref.dbprimary_acc to remove binary property
+# and make display_label binary
+ALTER TABLE xref MODIFY dbprimary_acc VARCHAR(40) NOT NULL;
+ALTER TABLE xref MODIFY display_label VARCHAR(40) binary NOT NULL;
+
+# Add analysis_description table
+CREATE TABLE analysis_description (
+  analysis_id	               int(10) unsigned NOT NULL,
+  description                  text,
+  display_label                varchar(255),
+
+  KEY analysis_idx( analysis_id )
+);