Add get_iplayer

Add github_release package

Add apriconv package

Update apr from 1.5.2 to 1.6.2

Update aws from 1.11.110 to 1.11.121

Update llvm to build shared libraries

Update diffutils from 3.5-1 to 3.6

Update automake from 1.15 to 1.15.1

Update subversion from 1.9.5 to 1.9.6