Upgrade tools
- upgraded LbPlatformUtils
- support Python 3
- new layout
- support non-x86_64 architectures
- upgraded LbDocker
- use Gitlab-CI and Gitlab Docker registry
- upgraded LbNightlyTools
- improvements to HTML logs
- fixes to compiler wrapper
- do not fall back on system compiler
- always add binutils 2.28 to the PATH/LD_LIBRARY_PATH
Edited by Marco Clemencic