PR fortran/28163

	* trans-expr.c (gfc_trans_string_copy): Generate inline code
	to perform string copying instead of calling a library function.
	* trans-decl.c (gfc_build_intrinsic_function_decls): Don't build
	decl for copy_string.
	* trans.h (gfor_fndecl_copy_string): Remove prototype.

	* intrinsics/string_intrinsics.c (copy_string): Remove function.

From-SVN: r115372