Add missing Jobs primary key.

* src/sql/upgrade-5.sql: New file.
* Makefile.am (dist_sql_DATA): Add it.

Makefile.am

@@ -91,7 +91,8 @@ dist_sql_DATA = 				\
   src/sql/upgrade-1.sql				\
   src/sql/upgrade-2.sql				\
   src/sql/upgrade-3.sql				\
-  src/sql/upgrade-4.sql
+  src/sql/upgrade-4.sql				\
+  src/sql/upgrade-5.sql
 
 dist_css_DATA =					\
   src/static/css/choices.min.css		\

src/sql/upgrade-5.sql

+BEGIN TRANSACTION;
+
+ALTER TABLE Jobs ADD PRIMARY KEY (evaluation, build);
+
+COMMIT;