c-gimplify.c (gimplify_c_loop): Improve initial implementations for loops whose condi...

c-gimplify.c (gimplify_c_loop): Improve initial implementations for loops whose conditions are known at...

	* c-gimplify.c (gimplify_c_loop): Improve initial implementations
	for loops whose conditions are known at compile-time.
	* gimplify.c (append_to_statement_list_1): Remove side_effects
	parameter, this function should never be called if its false.
	(append_to_statement_list): Only call append_to_statement_list_1
	if t is non-NULL tree with side-effects.
	(append_to_statement_list_force):  Likewise, if t is not NULL.

From-SVN: r91784