Fix reassembly of data w/ sizes beyond 32-bit capacities (BIT-348).

The main change is that reassembly code (e.g. for TCP) now uses
int64/uint64 (signedness is situational) data types in place of int
types in order to support delivering data to analyzers that pass 2GB
thresholds.  There's also changes in logic that accompany the change in
data types, e.g. to fix TCP sequence space arithmetic inconsistencies.

Another significant change is in the Analyzer API: the *Packet and
*Undelivered methods now use a uint64 in place of an int for the
relative sequence space offset parameter.
Merge branch 'master' into topic/jsiwek/bit-348
Update SNMP analyzer's DeliverPacket method signature.
Merge remote-tracking branch 'origin/topic/jsiwek/bit-348'

* origin/topic/jsiwek/bit-348:
  Update SNMP analyzer's DeliverPacket method signature.
  Fix reassembly of data w/ sizes beyond 32-bit capacities (BIT-348).

Conflicts:
	src/analyzer/protocol/file/File.cc
	src/analyzer/protocol/file/File.h
Fixing compiler warnings.
Merge branch 'master' into topic/robin/bit-348-merge
Merge branch 'topic/robin/bit-348-merge'

* topic/robin/bit-348-merge:
  Fixing compiler warnings.
  Update SNMP analyzer's DeliverPacket method signature.
  Fix reassembly of data w/ sizes beyond 32-bit capacities (BIT-348).

BIT-348 #merged
Updating submodule(s).

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