Various package rebuilds and updates including movement to zlib-ng

Update to boost package build 812
Update to colladadom package build 824
Update to curl package build 803
Update to freetype package build 792
Update to libpng package build 794
Update to libxml2 package build 822
Update to minizip-ng package build 819
Update to nghttp2 package build 797
Update to openssl package build 801
Update to uriparser package build 814
Update to zlib-ng package build 790