gimplify.c: Fix issues in comments throughout.

	* gimplify.c: Fix issues in comments throughout.
	(voidify_wrapper_expr): Fix long line.
	(build_stack_save_restore): Likewise.
	(gimplify_loop_expr): Likewise.
	(gimplify_compound_lval): Likewise.
	(gimplify_init_ctor_eval): Likewise.
	(gimplify_modify_expr_rhs): Likewise.
	(omp_notice_threadprivate_variable): Likewise.

From-SVN: r172476