[sql] Import reference version of SQLite 3.7.6.3.

third_party/sqlite/sqlite-src-3070603/test/lock_common.tcl

 # 2010 April 14
 #
 # The author disclaims copyright to this source code.  In place of
 # a legal notice, here is a blessing:
 #
 #    May you do good and not evil.
 #    May you find forgiveness for yourself and forgive others.
 #    May you share freely, never taking more than you give.
 #
 #***********************************************************************
@@ skipping 154 matching lines @@
       } else {
         append script $line
         append script "\n"
       }
     }
   }]
   close $fd
   set main_loop_written 1
 }