PR libstdc++/66006
* configure.host (abi_baseline_pair): Use separate baseline for
Solaris 11+ and Solaris 10 with gld.
* config/abi/post/solaris2.11/amd64/baseline_symbols.txt: New file.
* config/abi/post/solaris2.11/baseline_symbols.txt: New file.
* config/abi/post/solaris2.11/sparcv9/baseline_symbols.txt: New file.
From-SVN: r232317