Support for short and long batch queues of skbuff added.
In GC, internal pool of skbuff as long batch.
Lazy forwarding temporary disabled.
Forward skb to kernel enabled.
Polymorphic SKBUFF_BATCH_ADDR moved in pf_q-GC.h
Internal gc_data built on top of gc_skbuff_batch.
Minor changes.
Few lazy forwarding functions enabled.
Adaptation of code.
Typo: function correctly renamed.
copy_to_endpoint_skbs takes gc_skbuff_batch (because it might lazy forward them).
copy_to_endpoint functions provided of better names.
Minor changes
In GC, internal queue of gc_buff back to being the gc_queue_buff type.
GC: few useful functions added.
Minor changes.