Add a pair_dna_align_feature_id to allow support for paired reads

sql/patch_51_52_c.sql

+# patch_51_52_c.sql
+#
+# title: Add dna_align_feature.pair_dna_align_feature_id
+#
+# description:
+# Add a pair_dna_align_feature_id to allow support for paired reads
+
+ALTER TABLE dna_align_feature ADD COLUMN pair_dna_align_feature_id INT(10) UNSIGNED;
+
+ALTER TABLE dna_align_feature ADD INDEX pair_idx (pair_dna_align_feature_id);
+
+# patch identifier
+INSERT INTO meta (meta_key, meta_value) VALUES ('patch', 'patch_51_52_c.sql|pair_dna_align_feature_id');
+
+