Make interfaces of JepByteStream*Tool tools const, for MT compatibility.

This package only contained a single header file
(`IL1CaloMappingTool.h`). Move the file to TrigT1CaloToolInterfaces and
delete the package.

DataVector has had a long-standing bug in which it was possible to
get a non-const pointer from a const_iterator.  This package was relying
on that bug to compile.  Rework so that it handles const properly.

Classes in this package are used for both packing to bytestream and unpacking
from bytestream.  To do this, they use they use temporary maps stored
in data members with types like std::map<int, LVL1::CpmHits*>.
For the case of unpacking from bytestream, this is ok; however, for the
case of packing to bytestream, the pointers being entered into the
map should actually be const.

Reworked in this manner.  Bytestream packing is largely the same, with
the maps changed to be const.  For bytestream unpacking, we create
non-const maps as local variables and pass them around as needed.

Eventually, it would be nice to get rid of the member variables used for
packing as well.



Former-commit-id: 5e8c5163

src/xaod/CmxRoIByteStreamAuxCnv.cxx: fix order of EtSums and missingEtSums, breaks Tier0 frozen policy. (TrigT1CaloByteStream-00-09-52)

    * src/xaod/CmxRoIByteStreamAuxCnv.cxx: fix order of EtSums and missingEtSums,
      breaks Tier0 frozen policy.
    * Tagging TrigT1CaloByteStream-00-09-52

2016-08-04  scott snyder  <snyder@bnl.gov>

	* Tagging TrigT1CaloByteStream-00-09-51.
	* Fix compilation with gcc6.
	* Tagging TrigT1CaloByteStream-00-09-50.
	* Comply with ATLAS naming conventions.
	* Tagging TrigT1CaloByteStream-00-09-49.
	* endreq -> endmsg.


Former-commit-id: 43f94ec4

 - Follow to the new ROD specification where pedestal correction bit is
   enabled for encodings 0,1,2 and 6 (TrigT1CaloByteStream-00-09-37-01)

    *  PpmByteStreamReadV1V2Tool.cxx:
        - Follow to the new ROD specification where pedestal correction bit is
          enabled for encodings 0,1,2 and 6
    * Tagged as TrigT1CaloByteStream-00-09-37-01

2015-06-05 Alexander Mazurov <alexander.mazurov@cern.ch>
    * ReadLVL1CaloBSRun2_jobOptions.py:
        - Typo in type name for CPMTowersOverlap key in StoreGate
    * Disable coverity errors for misused enums
    * Tagged as TrigT1CaloByteStream-00-09-37

2015-05-21 Alexander Mazurov <alexander.mazurov@cern.ch>
    * TrigT1CaloByteStream_entries.cxx:
        - Fix for RUN1: enable CPM towers processing
    * Tagged as TrigT1CaloByteStream-00-09-36

  - JepRoiByteStreamV2Tool.cxx: fix bit mask for ROI type
  - CmxEnergySubBlock.cxx: fix version number in subblock header (TrigT1CaloByteStream-00-09-35)

    * Bytestream decoder fixes:
        - JepRoiByteStreamV2Tool.cxx: fix bit mask for ROI type
        - CmxEnergySubBlock.cxx: fix version number in subblock header
    * Tagged as TrigT1CaloByteStream-00-09-35

2015-04-27 Alexander Mazurov <alexander.mazurov@cern.ch>
    * ReadLVL1CaloBSRun2_jobOptions.py:
      - fix type for CPMTowersOverlap SG key (it's xAOD object)
    * CmxJetSubBlock.h:
      - explicitly enumerate source components
    * Tagged as TrigT1CaloByteStream-00-09-34

2015-04-26 Alexander Mazurov <alexander.mazurov@cern.ch>
    * CmxJetSubBlock: fix decoder
    * Disable some wrong Coverity warning (need to be checked)
    * Tagged as TrigT1CaloByteStream-00-09-33

2015-03-31 Alexander Mazurov <alexander.mazurov@cern.ch>
    * Add decoders that return xaod containers for CPMTower, CMXCPTob, CMXCPHit objects
    * PPM: For RUN1 data fill jep lut field with cp lut values (to avoid #ATR-10681)
...
(Long ChangeLog diff - truncated)