LCG 101, gcc11 and Detector/v0-patches
New features:
- Move to LCG 101, closes #66 (closed)
- Change default binaryTag to gcc11
- Switch back to Detector/v0-patches
Fixes:
- Fix lookup of gitBranch/gitGroup/gitUrl settings for data packages
Improvements:
- Do not checkout any data packages if no projects are needed
Internal changes:
- Do not ignore changes in system headers for ccache
- Protect toolchain for special cases
- Create runtime wrappers in python
- Update distcc wrappers instructions