Update dropbox from 29.4.20 to 30.4.22

Update erlang from 19.2 to 20.0

Update mongodb to 3.2.15.  Add method to compile it from source.

Adding luajit package

Add nix dependencies

Update expat 2.2.0 to 2.2.2

Update fish from 2.5.0 to 2.6.0

Update fontconfig from 2.11.94 to 2.12.4

Update freetype from 2.7.1 to 2.8

Update gc from 7.2g to 7.6.0

Update proj4 from 4.9.1 to 4.9.3

Update geos from 3.4.2 to 3.6.1

Update gdal from 1.11.2 to 1.11.5

Update geoip from 1.6.9 to 1.6.11

Update git from 2.13.0 to 2.13.3

Update gnutls from 3.5.12 to 3.5.14

Update gpgme from 1.8.0 to 1.9.0

Update graphicsmagick from 1.3.23 to 1.3.26

Add gtypist package