libpopt parses a minimal set of options now
libpopt has no pkg-config on hardy, so search it the traditional way
preparations for use of libpopt
Performance: already checked polygons are not checked anymore
missing references in polygon checks produce a warning now
debugging again
fixed bug if hglz contains no starting symbols => endless loop
Added file errors
fixed memory leak if the parser was crashing
fixed bug of zzuf seed 34934 in uncompressed crash.hglz
