200alpha5

[Matthew Flatt <mflatt@cs.utah.edu>]

The exp-tagged code in CVS for MzScheme and MrEd is now 200alpha5.

Changes:

 * Added `tcp-abandon-port'.

 * Modified `module' expansion/compilation to raise an exception if a
   `define'd identifier has its lexical context from a different
   module. This restriction prevents confusing errors when a similar
   identifier is used as an intended reference to the definition.

 * Added an optional argument to `continuation-mark-set->list' that
   exposes contiguous sequences of unmarked frames.

Matthew