[plt-scheme] 301.5

From: Matthew Flatt (mflatt at cs.utah.edu)
Date: Mon Feb 6 12:29:14 EST 2006

MzScheme and MrEd are now version 301.5 in the SVN repository trunk.

The changes are all internal improvements:

 * For nested captured continuations, the shared continuation tail is
   now represented by shared data (instead of separate copies for each

 * JIT: generates faster calls to `letrec'-bound procedures; inlines
   more arithmetic and common type tests.

 * MrEd: regions work correctly and consistently with auto-scrolled


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