IEEE and R4RS conformance test test.scm released.

["Aubrey Jaffer" <jaffer@martigny.ai.mit.edu>]

Test.scm is an IEEE and R4RS conformance test suite.  It is available
from altdorf.ai.mit.edu:archive/scm/test.scm
and nexus.yorku.ca:pub/scheme/new/test.scm

I have added some additional tests and removed some incorrect ones
since the last release of test.scm.  Thanks to those correspondents
who suggested the changes.

A lot more tests could be added to TEST-INEXACT.  Please send any
improvements to jaffer@ai.mit.edu.