Section 7.12, pg 228
Language encodings describe different languages, but c++03 (unlike c++11
and c++14) didn't change the language. C++03 is just C++98 with some DRs.
So for producers and consumers c++98 and c++03 look completely similar.
It was originally requested in Issue 120628.1, but the submitter agreed
with the consensus on the dwarf-discuss list to remove it.
12/06/2016 -- Rejected.
Previously considered by DWARF Committee (issue 120628.1).
Producers which wish to identify C++03 as C++98 may do so; this is QoI issue.