Fix replacing of statement via fold_stmt

[Diego Novillo]

Jan Hubicka wrote on 04/22/07 12:47:

> 	* tree-ssa-propagate.c (substitute_and_fold): Use bsi_replace when
> 	statement changed.
> 	* tree-inline.c (fold_marked_statements): LIkewise.
                                                  ^^^
OK.  Watch capitalization.