Fix debug build types and platforms
This MR introduces a new CMAKE_BUILD_TYPE: FastDebug, which maps to the compiler flags -Og -g.
The mapping between LCG_OPTIMIZATION and CMAKE_BUILD_TYPE become:
LCG_OPTIMIZATION |
CMAKE_BUILD_TYPE |
|---|---|
| opt | Release |
| dbg | FastDebug |
| do0 | Debug |
We also add the toolchain LCG_97a/nehalem-centos7-gcc9-opt.cmake for builds with sse4.2 enabled.
Closes #10 (closed)