Makefile.in (cpp_install_dir, [...]): New variables.

p
        * Makefile.in (cpp_install_dir, INSTALL_CPP, UNINSTALL_CPP): New
        variables.
        (install-cpp, uninstall-cpp): New targets.
        (install-normal): Depend on $(INSTALL_CPP).
        (uninstall): Depend on $(UNINSTALL_CPP).
        * configure.in (cpp_install_dir): New, substitute.
        (tmake_file): Added t-install-cpp for --enable-cpp.
        * configure: Rebuilt.
        * cpp.sh: New cpp script.
        * config/t-install-cpp: New target fragment.

From-SVN: r25529