Introduced LCG_PYTHON_VERSION to be used to build the LCG stacks for p2 and p3
Introduced new parameter LCG_PYTHON_VERSION that can be used to build the LCG stack for python 2 and python 3 re-using the same toolchain file. Default is python 2. So far only the toolchain heptools-hsf.cmake
has been modified. The work needs to be done for dev3 to add devpython3 and so on.
The tool lcgcmake
has been adapted and a configuration option --pyversion
has been added. The default in this case is the version of the default python.