Log Message:
-----------
Seed hashcodes for NpgsqlPath and NpgsqlPolygon better.
Modified Files:
--------------
Npgsql2/src/NpgsqlTypes:
NpgsqlTypes.cs (r1.12 -> r1.13)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/npgsql/Npgsql2/src/NpgsqlTypes/NpgsqlTypes.cs.diff?r1=1.12&r2=1.13)