Add seasocks + pngpp to apt-publisher

apt-publisher/Makefile

 	        boost/pkg/*.deb \
 	        benchmarklib/pkg/*.deb \
 	        fastpfor/pkg/*.deb \
+	        seasocks/pkg/*.deb \
+	        pngpp/pkg/*.deb \
 	        \
 	        msxsaver/pkg/*.deb \
 	        \