SISC 1.8.0-alpha Released

SISC 1.8.0-alpha, the first release in the 1.8 series is now available.  
This release includes a number of behind the scenes changes, which will 
probably increase as we progress through development of this series.

  * All bugfixes that were present in 1.7.8
  * Added support for display of stack traces of Java exceptions by
    |print-exception|.
  * Changed eq? to pointer equality.
  * Changed eq?-based hashtable to match new semantics of eq?.
  * Added eqv?-based hashtable.
  * LexicalEnvironment recycling and limited trampolining (both 
    increase overall execution speed)
  * Optimizer support for variable reference propogation
  * Enforce the use of exact integers for indexes into vectors, etc
  * Strict R5RS compatibility mode (|strict-r5rs-compliance| parameter).
  * SRFI-22 Support
  * Migration of synchronization primitives to mutex/condvar rather than
    monitor. 
  * SRFI-18 support.
  * Support for |load-bundle!| from SRFI-29 
  
You should especially note the change of |eq?| to pointer equality.  
This means that |eqv?| must be used for comparing characters and numbers 
for equality, as they will frequently not be pointer equal.  Check your 
code for |eq?| as well as |assq| and |memq| usage.

	Scott
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