Fixed some bugs in the gluTess* callback support.  Now the redbook demo "tess" runs as it should, at least on my i686 Debian 3.0 box.  Still need to test on "tesswind".
Fixed some bugs in the gluTess* callback support.  Now
the redbook demo "tess" runs as it should, at least on my
i686 Debian 3.0 box.  Still need to test on "tesswind".

youjinbou/lablgl,youjinbou/lablgl