TCP Reassembler hotfix for conns > 2GB.

The TCP Reassembler does not deliver any data to analyzers after the
first 2GB due to signed integer overflow (Actually it will deliver again
between 4--6GB, etc.) This happens silently, i.e., without content_gap
events or Undelivered calls.

See Comments in TCP_Reassembler.cc for more details.

As a hotfix that seems to work I disabled the seq_to_skip features. It
wasn't used by any analyzer or policy script (Note, that seq_to_skip is
different from skip_deliveries).

See also ticket #348

src/Reassem.h

@@ -11,7 +11,7 @@
 class DataBlock {
 public:
 	DataBlock(const u_char* data, int size, int seq,
-			DataBlock* next, DataBlock* prev);
+			DataBlock* prev, DataBlock* next);
 
 	~DataBlock();