* FindVisitor.cc (FindVisitor::visitDirectory): Check tracking level

	* FindVisitor.cc (FindVisitor::visitDirectory): Check tracking level
	argument to limit the search depth.
	* FindVisitor.h (FindVisitor::visitDirectory): Add tracking level
	argument to declaration.
	* IniParseFindVisitor.cc (IniParseFindVisitor::visitFile): Check
	found file's basePath to end in SETUP_INI_DIR.
	* find.cc (Find::accept): Accept additional tracking level argument
	and submit to FindVisitor::visitDirectory.
	* find.h (Find::accept): Add tracking level argument to declaration.
	* fromcwd.cc (SetupFindVisitor::visitFile): Check found file's basePath
	to end in SETUP_INI_DIR.
	(do_fromcwd): Only search ini file two directory levels deep.
	* ini.cc (do_local_ini): Ditto.
	(do_remote_ini): Add SETUP_INI_DIR to current_ini_name.
	* ini.h (SETUP_INI_DIR): New macro.
	(SETUP_INI_FILENAME): Just define filename.
	(SETUP_BZ2_FILENAME): Ditto.