More Unix compatibility: Add "lib" prefix in case the module name doesn't

2001-10-09  Tor Lillqvist  <tml@iki.fi>

	* gmodule-win32.c (_g_module_build_path): More Unix compatibility:
	Add "lib" prefix in case the module name doesn't already have it,
	except if it ends with ".dll" (in which case it probably already
	is the name of an existing DLL). This is needed for instance for
	the gdk-pixbuf loaders, which are called "lib*.dll", but
	gdk-pixbuf-io calls g_module_build_path without the "lib" prefix.