Add the pcache module from the experimental branch. Also change things so that most of the built-in SQL functions are kept in single static hash-table, rather than creating and populating a separate hash table for each open database connection. (CVS 5566)

FossilOrigin-Name: cb494e10d71852024647aaa254203579ad438ea9

src/malloc.c

@@ -12,7 +12,7 @@
 **
 ** Memory allocation functions used throughout sqlite.
 **
-** $Id: malloc.c,v 1.34 2008/08/05 17:53:23 drh Exp $
+** $Id: malloc.c,v 1.35 2008/08/20 14:49:24 danielk1977 Exp $
 */
 #include "sqliteInt.h"
 #include <stdarg.h>
@@ -382,6 +382,7 @@ void sqlite3ScratchFree(void *p){
 ** and that memory is of the right size and is not completely
 ** consumed.  Otherwise, failover to sqlite3Malloc().
 */
+#if 0
 void *sqlite3PageMalloc(int n){
   void *p;
   assert( n>0 );
@@ -462,6 +463,7 @@ void sqlite3PageFree(void *p){
     }
   }
 }
+#endif
 
 /*
 ** TRUE if p is a lookaside memory allocation from db