Rename cxx1z -> cxx17 across all diagnostic IDs.

llvm-svn: 310805
diff --git a/clang/lib/Parse/ParseDeclCXX.cpp b/clang/lib/Parse/ParseDeclCXX.cpp
index 2301284..dcba364 100644
--- a/clang/lib/Parse/ParseDeclCXX.cpp
+++ b/clang/lib/Parse/ParseDeclCXX.cpp
@@ -605,7 +605,7 @@
 
   if (TryConsumeToken(tok::ellipsis, D.EllipsisLoc))
     Diag(Tok.getLocation(), getLangOpts().CPlusPlus1z ?
-         diag::warn_cxx1z_compat_using_declaration_pack :
+         diag::warn_cxx17_compat_using_declaration_pack :
          diag::ext_using_declaration_pack);
 
   return false;
@@ -723,7 +723,7 @@
 
   if (DeclsInGroup.size() > 1)
     Diag(Tok.getLocation(), getLangOpts().CPlusPlus1z ?
-         diag::warn_cxx1z_compat_multi_using_declaration :
+         diag::warn_cxx17_compat_multi_using_declaration :
          diag::ext_multi_using_declaration);
 
   // Eat ';'.