Rename tok::eom to tok::eod.

The previous name was inaccurate as this token in fact appears at
the end of every preprocessing directive, not just macro definitions.
No functionality change, except for a diagnostic tweak.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126631 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/docs/InternalsManual.html b/docs/InternalsManual.html
index 813015e..6956a11 100644
--- a/docs/InternalsManual.html
+++ b/docs/InternalsManual.html
@@ -821,7 +821,7 @@
     within the filename.</li>
 <li>When parsing a preprocessor directive (after "<tt>#</tt>") the
     ParsingPreprocessorDirective mode is entered.  This changes the parser to
-    return EOM at a newline.</li>
+    return EOD at a newline.</li>
 <li>The Lexer uses a LangOptions object to know whether trigraphs are enabled,
     whether C++ or ObjC keywords are recognized, etc.</li>
 </ul>