Changes to GNU Chess -- should we have analysis tools?

[Simon Waters]

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Hi all,

committed a few changes to CVS, including Anil's long ago contributed
fix for the segfault when hashsize is too large.

I have a long list of changes I'll hopefully be committing over the next
few weeks, much of it updates to the documentation.

I have been thinking a bit about "extras" for GNU Chess. One thing that
has been commented is the absence of an analysis/annotation tool. Anyone
familiar with the old GNU Chess v4 tools?

Specifically a blunder check tool that uses Winboard analysis commands
to annotate PGN files would seem to be a relatively small piece of code
in a language with some basic support for chess/PGN (e.g. Perl?).

I thinking given time controls and sensitivity in centipawns, it should
just spit out cases where the evaluation changes more than sensitivity,
along with the last line of analysis from the engine.

 Simon
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