dll_list: Store dll file name as full NT path.

dll_list: Store dll file name as full NT path.

Store loaded dll's file name as full NT path.

	* dll_init.h (struct dll): Rename member variable name to ntname.
	(struct dll_list): Declare private static member variable
	nt_max_path_buffer.  Declare public static methods form_ntname,
	form_shortname.  Define public static methods nt_max_path_buf,
	buffered_shortname.
	(dll_list::operator []): Use PCWCHAR rather than const PWCHAR.
	(dll_list::find_by_modname): Ditto.
	* dll_init.cc (in_load_after_fork): Define earlier in file.
	(struct dll_list): Rename member variable name to ntname.
	Define nt_max_path_buffer variable.
	Implement static methods form_ntname, form_shortname.
	(dll_list::operator []): Use PCWCHAR rather than const PWCHAR.
	(dll_list::find_by_modname): Ditto.
	(reserve_at): Ditto.
	(release_at): Ditto.
	(dll_list::alloc): Use nt_max_path_buf method instead of local
	buffer.  Store module file name as full NT path, convert using
	the form_ntname static method.
	(dll_list::load_after_fork): Call load_after_fork_impl only when
	reload_on_fork is set.
	* fork.cc (frok::child): Call dlls.load_after_fork even without
	need to dynamically load dlls.
	(frok::parent): Move syscall_printf into the retry loop.