the ECHO macro is set to "echo" by default, but it is set to "true" if
make(1) is invoked with the -s option while ECHO_CMD is always set to
the echo command.
Use command macros where appropriate.
Patches are no longer needed, and part of pkg-plist is automatically
generated (code "borrowed" from O'Brien's vim5 port :).
I also moved the xemacs21 dependency to emacs20.
A concurrent, object-oriented, distributed language with constraint-based
inference.
PR: 19476
Submitted by: Mathias Picker <mathiasp@virtual-earth.de>