This patch is just the easy part of the class names patch, which

This patch is just the easy part of the class names patch, which
allows the parsing of "class" in addition to "struct" and "union" to
declare a record.  So this patch allows:

 class C { };
 class C c1;

But it does not contain the lookup bits, so this won't work yet:

 C c2;

Patch by Doug Gregor!

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49613 91177308-0d34-0410-b5e6-96231b3b80d8