Changelog for xstacks-ext.c, xstacks-pfe.fs, and
xstacks-pfe-test.fs

Unattributed changes are by the original author, David N.
Williams.  The revision date in the source file may be more
recent than the most recent date here, when only cosmetic
changes have been made.

Version 0.6.5
20Sep06 * Added brackets to the names of primitives for
	  CREATE-EXEC, and used the old names for new basic
	  xstack words that take an xstack structure on the
	  stack.
	* Tested the basic words with full overflow and
	  underflow exceptions via xstacks-test.fs.

Version 0.6.4
 9Sep06 * Bumped version number to sync with xstacks-pfe.fs.
	* Replace p4_ by dw_ to avoid possible conflict with the
	  pfe distribution.

Version 0.6.3
27Jul06 * More comment style mods.  Changed casts in
	  p4_xsp_fetch() and p4_two_x_from_store() to remove gcc
	  4.0.1 hard warnings.

Version 0.6.2
17Sep02 * Updated dictionary binding to Guido's newer P4_FXco()
	  style, instead of CO().  Cosmetic mods to comment
	  style.

Version 0.6.1
19Feb01 * Started port from ^Forth Motorola 680x0 stacks
	  package, last revised March 21, 1998.
26Feb06 * Last revision.