Schema version patch for 74->75

sql/patch_74_75_a.sql

+# patch_74_75_a.sql
+#
+# Title: Update schema version.
+#
+# Description:
+#   Update schema_version in meta table to 75.
+
+UPDATE meta SET meta_value='75' WHERE meta_key='schema_version';
+
+# Patch identifier
+INSERT INTO meta (species_id, meta_key, meta_value)
+  VALUES (NULL, 'patch', 'patch_74_75_a.sql|schema_version');