[sql] Import reference version of SQLite 3.8.7.4.

third_party/sqlite/sqlite-src-3080704/test/randexpr1.tcl

 # Run this TCL script to generate thousands of test cases containing
 # complicated expressions.
 #
 # The generated tests are intended to verify expression evaluation
 # in SQLite against expression evaluation TCL.  
 #
 
 # Terms of the $intexpr list each contain two sub-terms.
 #
 #     *  An SQL expression template
@@ skipping 322 matching lines @@
       } else {
         make_test_case "SELECT $sqle FROM t1 WHERE NOT ($sqlb)" $ans
       }
     }
   }
 }
 
 # Terminate the test script
 #
 puts {finish_test}