1.90 demos

[Michael Roberts]

I spend a couple of minutes today trying to get the demos compiling under
the 1.90 release.

Between 1.6.0 and 1.9.0, it looks like a few things were moved from
CommonC++-X.X.X/posix to /src and possibly elsewhere. This broke references
to /posix files from demo/Makefile.in so that the configure generated demo
makefile does not work - it stumbles over refences to the files which were
in posix. A cursory substitution of /src for /posix in demo/Makefile.in
revealed that not everything had been moved from posix into src; I can
ferret around with it tomorrow if someone hasn't already fixed it - it would
be nice to have working examples.

Let me know if that is too simple minded and if more major changes are
required to get the demos going.

regards

~m