z/OS: Add -g1 to include debug symbols which should have minimal performance impact and improve serviceability, remove COMPACT/COMPRESS to avoid conflicts with -g, and add _CXX_CXXSUFFIX=cpp to support newer XL C++
z/OS: Add -g1 to include debug symbols which should have minimal performance impact and improve serviceability, remove COMPACT/COMPRESS to avoid conflicts with -g, and add _CXX_CXXSUFFIX=cpp to support newer XL C++

RuntimeTools/omr-agentcore,RuntimeTools/omr-agentcore,RuntimeTools/omr-agentcore,RuntimeTools/omr-agentcore,RuntimeTools/omr-agentcore