[OctDev] branch and purge

[Paul K. <pki...@us...>]

With the final 2.1.x release of octave-forge, we are
ready to make a 2.1.x branch and purge the trunk of
support for 2.1 series octave.  Can someone with
familiarity with CVS please perform the branch
operation on tag R2006-01-28.

For purge, we do not need to support earlier than
2.9.4.  Feel free to remove #ifdef's for older
versions from your code.  Similarly, m-files can
assume octave 2.9.x syntax and libraries.

This would be an excellent time to redo the build
system so that it is a set of independent packages.
Any bits of common configuration information should
be added to Octave.  Volunteers needed.

Thanks,

	- Paul