Fix of orthanc-gdcm

[Sébastien Jodogne <s.jodogne@orthanc-labs.com>]

Dear all,

This is a follow-up to the rejection of the NEW package "orthanc-gdcm"
in July 2020 [1].

As the packages "liborthancframework*" were accepted in unstable
yesterday, I have been able to refactor the "orthanc-gdcm" so that it
doesn't depend on the source code of Orthanc anymore. The resulting
package is now much simpler [2].

Andreas, please would you kindly review the new version of the package,
and possibly upload it again to the NEW queue? As always, many thanks in
advance :-)

Best Regards,
Sébastien-


[1]
https://alioth-lists.debian.net/pipermail/debian-med-packaging/2020-July/082973.html
[2] https://salsa.debian.org/med-team/orthanc-gdcm