Changes in the current code since fc-host-tools-r4:

* loadtools: added support for dsample (TI D-Sample) and fcfam (FreeCalypso
  hardware family starting with FCDEV3B) targets.

* loadagent: UART autodetection now works not only with Calypso boot ROM
  version 0300 found in the common Calypso devices, but also with the older
  version 0200 found in the older Calypso silicon on early D-Sample boards.

* loadtools support for C139/140 target: use -h compal -c 1004 command line
  options instead of the previous -h compal -c 1003 to support the newer
  versions of C139/140 boot code which expect "1004" instead of the more
  familiar "1003" in the serially downloaded code image.  The new -c 1004
  option ("1004" signature bytes) should work with all currently known
  Mot/Compal boot code versions, thus -c 1003 is retained only for backward
  compatibility with existing usage.

* tiffs: added -O option to parse FFS images from the ancient 20020917 firmware
  on the D-Sample.

* rvinterf & fc-shell: added support for the experimental TCH rerouting feature
  of FreeCalypso Citrine firmware.

* Internal cleanup and refactoring in various places.

Changes from fc-host-tools-r3 to fc-host-tools-r4:

* Shellcode-based Compal phone break-in utility tfc139 reworked in a new way
  that should work with all Mot C1xx firmwares beyond the original TFC139
  target: see doc/Compal-unlock and doc/TFC139-breakin for the details.

* Documentation and cosmetic code changes to reflect the new understanding of
  TI's TM (Test Mode) predating ETM (Enhanced Test Mode): see doc/RVTMUX for
  a detailed explanation.

* Added support for the old non-enhanced Test Mode memory read command in the
  form of fc-tmsh omr command, fc-fsio omemdump command and fc-olddump utility.

* rvtdump and rvinterf recognize the old all-ASCII GPF trace format emitted by
  the D-Sample firmware from 20020917 and print these traces as ASCII instead
  of hex.

* fc-dspapidump fixed to be independent of host byte order.