[Amforth] New release 6.7

[Matthias T. <mt...@we...>]

Hi,

I've just tagged and published the release 6.7. It contains some
bugfixes for the existing platforms (thanks to Richard and Martin).

Due to a generous donation from the German Forth e.V. a RISC-V board
found it's way to my desk and I started porting amforth to it. As of
this release, only the interpreter is working and cooperates with the
amforth-shell utility. No compilation at this time. The files section
of sourceforge contains the toolchain I use (linux 64bit binaries) for
those who are brave enough to compile themselves. It's a nice platform.

Have fun
Matthias