For the shell, changed the output of the errors on lines 2910 and 2914 to goto

stderr.  I left the timer values going to stdout as all of the other interactive
shell commands (startup banner, help, etc.) go to stdout and I felt this was more
consistent.  Ticket 43db771bb2.

FossilOrigin-Name: 8a8eeb0c5af4bbeafd9864b03557eb9cd32f09ce

src/shell.c

@@ -2907,11 +2907,11 @@ static int process_input(struct callback_data *p, FILE *in){
           sqlite3_snprintf(sizeof(zPrefix), zPrefix, "SQL error:");
         }
         if( zErrMsg!=0 ){
-          printf("%s %s\n", zPrefix, zErrMsg);
+          fprintf(stderr, "%s %s\n", zPrefix, zErrMsg);
           sqlite3_free(zErrMsg);
           zErrMsg = 0;
         }else{
-          printf("%s %s\n", zPrefix, sqlite3_errmsg(p->db));
+          fprintf(stderr, "%s %s\n", zPrefix, sqlite3_errmsg(p->db));
         }
         errCnt++;
       }