Add a new api sqlite3_randomness() for providing access to SQLite's

internal PRNG.  Add sqlite3_test_control() verbs for controlling the PRNG. (CVS 4882)

FossilOrigin-Name: 15110ea02768bfe977a57eccd6b941a36ebd6b32

src/sqlite3ext.h

@@ -15,7 +15,7 @@
 ** as extensions by SQLite should #include this file instead of 
 ** sqlite3.h.
 **
-** @(#) $Id: sqlite3ext.h,v 1.18 2008/03/02 03:32:05 mlcreech Exp $
+** @(#) $Id: sqlite3ext.h,v 1.19 2008/03/19 14:15:35 drh Exp $
 */
 #ifndef _SQLITE3EXT_H_
 #define _SQLITE3EXT_H_
@@ -182,6 +182,7 @@ struct sqlite3_api_routines {
   sqlite3_vfs *(*vfs_find)(const char*);
   int (*vfs_register)(sqlite3_vfs*,int);
   int (*vfs_unregister)(sqlite3_vfs*);
+  void (*randomness)(int,void*);
 };
 
 /*
@@ -342,6 +343,7 @@ struct sqlite3_api_routines {
 #define sqlite3_vfs_find               sqlite3_api->vfs_find
 #define sqlite3_vfs_register           sqlite3_api->vfs_register
 #define sqlite3_vfs_unregister         sqlite3_api->vfs_unregister
+#define sqlite3_randomness             sqlite3_api->randomness
 #endif /* SQLITE_CORE */
 
 #define SQLITE_EXTENSION_INIT1     const sqlite3_api_routines *sqlite3_api;