Import SQLite 3.8.7.4.

third_party/sqlite/src/tool/showstat4.c

 /*
 ** This utility program decodes and displays the content of the
 ** sqlite_stat4 table in the database file named on the command
 ** line.
 */
 #include <stdio.h>
 #include <string.h>
 #include <stdlib.h>
 #include <ctype.h>
 #include "sqlite3.h"
@@ skipping 137 matching lines @@
       zSep = ",";
       y += sz;
     }
     printf("\n");
   }
   sqlite3_free(zIdx);
   sqlite3_finalize(pStmt);
   sqlite3_close(db);
   return 0;
 }