binutils: Update to 2.24
cloog-ppl: Move to compat-cloog-ppl

GCC 4.9 uses ISL as a backend for cloog. Therefore, we move
the cloog-ppl library into the compat section so that older
versions of GCC can still be used.
isl: New package (version 0.12.2)

Required for GCC 4.9
cloog: New package (version 0.18.1)