* automake.in (Language): Add attributes `Name' and `config_vars'.

* automake.in (Language): Add attributes `Name' and `config_vars'.
(&finish): Work properly if there is no _finish.
(Automake): Register language Names and AC_SUBST dependencies.
Register Fortran 77 variables upon which ratfor and ppf77 depend.
(&handle_languages): Once per language, invoke
`define_linker_variables', and check its config_vars.
(&lang_cxx_finish, &lang_f77_finish, &lang_objc_finish)
(&lang_java_finish): Remove.
(&lang_ppf77_finish, &lang_ratfor_finish): Adjust.