update package libsigc++
update package armadillo
upgrade package lapack
update package postgresql
update package gnutls
update package libpng
update package ffmpeg
update package dbus
update package armadillo
update package sqlite
Fix historical leftover in tutorial
update package libxml++
update package curl
package curl: enable ipv6
new package wget

Though not a library, wget is useful because it is often used by
applications.
package wget: remove non-options
package pthreads: fix update macro
package portaudio: fix update macro
package json-c: fix update macro
update package cairo