* update of freebsd port description files and mkport.pl script
  * MD5 is not generated anymore, it seems
  * syntax for BUILD/RUN_DEPENDS changed, it seems
  * use the current pkg-descr description
* fixed tests because of changed DISTDIR variable
* cgihead2.t: avoid checking same URL multiple times

  This may happen if e.g. DISTFILE_SOURCE and SF_DISTFILE_SOURCE point
  to the same URL.
* cgihead2.t: check also download of debian amd64 package
* new debian packages (3.18) are available
* a new symlink README.pod

  This is primary for github to pick the English version of the README,
  and to format it as Pod.