Add automatic recovery from the pager "error-state". Also add a new error code - SQLITE_IOERR_NOMEM. (CVS 4454)

FossilOrigin-Name: 12eca32a6a3d68d5b20eed03afdffe7599e66014
diff --git a/src/sqliteInt.h b/src/sqliteInt.h
index 3a262fc..2170e53 100644
--- a/src/sqliteInt.h
+++ b/src/sqliteInt.h
@@ -11,7 +11,7 @@
 *************************************************************************
 ** Internal interface definitions for SQLite.
 **
-** @(#) $Id: sqliteInt.h,v 1.612 2007/10/01 17:47:00 drh Exp $
+** @(#) $Id: sqliteInt.h,v 1.613 2007/10/03 08:46:45 danielk1977 Exp $
 */
 #ifndef _SQLITEINT_H_
 #define _SQLITEINT_H_
@@ -1891,10 +1891,14 @@
   void sqlite3MallocDisallow(void);
   void sqlite3MallocAllow(void);
   void sqlite3MallocBenignFailure(int);
+  void sqlite3MallocEnterBenignBlock(int isBenign);
+  void sqlite3MallocLeaveBenignBlock();
 #else
 # define sqlite3MallocDisallow()
 # define sqlite3MallocAllow()
 # define sqlite3MallocBenignFailure(x)
+# define sqlite3MallocEnterBenignBlock(x);
+# define sqlite3MallocLeaveBenignBlock();
 #endif