Revert "Clarify at compile-time that cling cannot handle the new GCC ABI yet."
Revert "Clarify at compile-time that cling cannot handle the new GCC ABI yet."

Cling should now be able to do that.

karies/cling,root-mirror/cling,root-mirror/cling,karies/cling,marsupial/cling,root-mirror/cling,marsupial/cling,marsupial/cling,marsupial/cling,karies/cling,marsupial/cling,root-mirror/cling,root-mirror/cling,root-mirror/cling,karies/cling,karies/cling,karies/cling,marsupial/cling