As gpfdist will now be part of the gpdb build by default, we may just
treat it as part of gpdb core.
* Integrate gpfdist configure file to the top level configure and
  changed necessary files to accomadate the changes.
* Modify travis.yml for gpfdist structural changes
* Update gpfdist.c to use GP_VERSION from pg_config.h

Fix warning issues from transform.c
* There were many prototype warnings that was being mentioned.
  Added a headerfile for missing prototype warnings, also included the
  structs into the headerfile.

Replace src/port/glob.c
* src/port/glob.c is dead code at the moment and can be safely replaced by
  the windows changes from gpfdist/port

Check for libyaml:
* disable transformations for gpfdist if not found.