Add LCG_97apython3 (from /cvmfs/sft.cern.ch)
I also added the toolchains LCG_97a/x86_64-centos7-gcc9+py3-{opt,dbg}
which are just aliases to LCG_97apython3/x86_64-centos7-gcc9-{opt,dbg}
.
I also added the toolchains LCG_97a/x86_64-centos7-gcc9+py3-{opt,dbg}
which are just aliases to LCG_97apython3/x86_64-centos7-gcc9-{opt,dbg}
.