SGF parser update

[Antti Huima <huima@xxxxxx>]

Hi,

the SGF parser I recently announced supports now semantical error checking
for SGF files and includes a complete set of procedures for manipulating
the SGF trees and the property values. Also, header file comments are more
elaborous. The SGF file output formatting has been improved.

The updated version is still in

  http://security-hole.hut.fi/distrib/sgf.tar.gz.

-- 
Antti Huima
SSH Communications Security Oy