Felix's ditag table patch.

sql/patch_43_44_b.sql

+# patch_43_44_b
+#
+# title: optimising ditag tables
+#
+# description:
+# some small memory & speed improvements for the ditag tables
+
+ALTER TABLE ditag CHANGE COLUMN type type varchar(30) NOT NULL, \
+ CHANGE COLUMN tag_count tag_count smallint(6) unsigned NOT NULL default 1, \
+ CHANGE COLUMN sequence sequence TINYTEXT NOT NULL, \
+ CHANGE COLUMN name name varchar(30) NOT NULL;
+
+ALTER TABLE ditag_feature CHANGE COLUMN cigar_line cigar_line TINYTEXT NOT NULL, \
+ CHANGE COLUMN ditag_side ditag_side ENUM('F', 'L', 'R') NOT NULL;
+CREATE INDEX seq_region_idx ON ditag_feature (seq_region_id, seq_region_start, seq_region_end);
+
+# patch identifier
+INSERT INTO meta (meta_key, meta_value) VALUES ('patch', 'patch_43_44_b.sql|optimise_ditag_tables');
+