GitLab

* First block of data was being thrown on the floor during
  decompression in some cases.  This is now fixed.

* Debug output now knows about cookie related SWIs and won't claim that
  they are unknown SWIs.

* Transfers which are both Chunked and compressed work correctly now.

Const-ness of veneers modified on the basis of the CMHG version number to
avoid build problems.