Add util/ccnl-socket.c
Add some util functions for the abstract machine
Introduce function header for global computation requests
Fix pure comutation request crashes
lambda expressions are split correclty into two components instead of just splitting the names by slashes
Merge remote-tracking branch 'upstream/nfn' into nfn
Added an additional compilation step from the (more expressive) 'Scala' lambda calculus to the simpler nfn lambda Calculus.
This will enable to implement macro expensions more easily and will make it possible to add features which are not yet supported by the underlying nfn engine.