[arch-dev-public] Adding two packages to [core]

Hi, With gcc-4.4 nearing release (once licensing issues are resolved), I will be adding two new deps for gcc to the [core] repo. PPL and Cloog-PPL are required for graphite optimizations which were merged in gcc-4.4. A default ppl install is 15MB of libraries etc and 20MB of documentation so I will be building it with "!docs". Allan