This reverts merge request !154

* this fix changes the build behaviour by only building HEADs with tags
* unlike the previous version only the tag of the HEAD is checked and built
* if an older tagged version has to be built please use the manual jobs

The binary changes file can never pass the check since the dsc
referenced there is mangled by the mergechanges call.

f8614406 should have handled both
scripts but only handled the param case.

Mitigates: #37

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* #27
  succesful jobs should send mails as well

* #19
  blessed-builds: bring back lintian

* #20
  bring back automatic tests

* partly #26
  unify automatic and param build
  * only few differences prevail

added attachment