Debian packaging for DP3
This commit contains the required changes for creating a Debian package for DP3. The CMake module PythonInstall.cmake
is no longer used, so it has been removed. The new directory CPack
contains the files that make packaging possible. The changes in CMakeLists.txt
make packaging available and set the correct install path for Python files. DPPP/CMakeLists.txt
fixes an installation problem with Python files.