Update the sessions branch to include the SQLLOG enhancement, the

SQLITE_IOERR_DELETE_NOENT fix, and a fix for the number-of-documents
bug in FTS4.

FossilOrigin-Name: ba8d08b67021a32fda069c18b7eb93523e6f0d1f

src/sqliteInt.h

@@ -2527,6 +2527,10 @@ struct Sqlite3Config {
   void (*xLog)(void*,int,const char*); /* Function for logging */
   void *pLogArg;                       /* First argument to xLog() */
   int bLocaltimeFault;              /* True to fail localtime() calls */
+#ifdef SQLITE_ENABLE_SQLLOG
+  void(*xSqllog)(void*,sqlite3*,const char*, int);
+  void *pSqllogArg;
+#endif
 };
 
 /*