sndutil project subdirectories

sndtools	- Simple soundfile utilities such as stereo-to-mono converter
sndproc		- Program shells for soundfile processing
dspsound	- DSP soundfile examples
sndgen		- Program shells for soundfile creation

These utilities are now portable across architectures (at least, they have been
tested on Motorola and Intel by Leigh Smith, leigh@psychokiller.dialix.oz.au).

Most utilities do not have man pages yet, but they typically explain their usage when invoked with no command-line arguments.

Please email any enhancements, bugfixes, etc. to musickit@ccrma.stanford.edu
so we can update the release version.  Thanks!