Merge from development tree:

Merge from development tree:
2000-03-21  Alexandre Oliva  <oliva@lsd.ic.unicamp.br>
* ltconfig.in (variables_saved_for_relink): Set to `PATH
$shlibpath_var $runpath_var'.  If with_gcc, add gcc-related
environment variables.  Add it to the configuration section.
* ltmain.in (relink_command): Expand those variables.