This moves the version numbers into an isolated configured header so
that not all of CMake needs to rebuild when the version changes.
Previously we had spaces, dashes and/or the word 'patch' randomly chosen
before the patch number. Now we always report version numbers in the
traditional format "<major>.<minor>.<patch>[-rc<rc>]".
We still use odd minor numbers for development versions. Now we also
use the CCYYMMDD date as the patch number of development versions, thus
allowing tests for exact CMake versions.
-remove the unscriptable commands also from the cpack cmake
-use CPACK_PACKAGE_CONTACT in CMakeCPack.cmake, it's used in the nsis and
the deb generator
-make set_properties() scriptable
-use a non-const char array for adding the python modules
Alex