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fixed gforth-native bug (branch target resolution)
fixed "make dist" bug (arch/misc/optcmove.fs now included)
Documentation changes

    1: User-visible changes between 0.6.[01] and 0.6.2:
    2: 
    3: You now have to define a macro MAYBE_UNUSED (see manual); useful for
    4:   suppressing expected "unused variable" warnings.
    5: 
    6: User-visible changes between 0.5.9-20020901 and 0.6.0:
    7: 
    8: Support for upward-growing stacks (see "Stack growth direction" in the
    9:   manual)
   10: New macro in output: IMM_ARG.
   11: New input flag: include-skipped-insts (currently pointless).
   12: Lazy loading and eager storing of stack items in superinstructiuons;
   13:   this reduces register pressure (useful on 386), but causes compiler
   14:   warnings about unused variables.
   15: 
   16: 
   17: User-visible changes between 0.5.9-20020822 and 0.5.9-20020901:
   18: 
   19: The store optimization is now disabled by default, but can be enabled
   20: by the user.  Documentation for this optimization is also new.
   21: 
   22: 
   23: Use-visible changes between 0.5.9-20010501 and 0.5.9-20020822:
   24: 
   25: There is now a manual (in info, HTML, Postscript, or plain text format).
   26: 
   27: There is the vmgen-ex2 variant of the vmgen-ex example; the new
   28: variant uses a union type instead of lots of casting.
   29: 
   30: Both variants of the example can now be compiled with an ANSI C
   31: compiler (using switch dispatch and losing quite a bit of
   32: performance); tested with lcc.
   33: 
   34: There are several changes in the way you have to define macros (see
   35: node/section "Changes" in the manual).  I recommend keeping the
   36: gforth-0.5.9-20010501 version until you have completed the changes
   37: (note that you can have several versions of Gforth installed at the
   38: same time).
   39: 
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