Omit OatMethodOffsets for classes without compiled code

Change-Id: If0d290f4aebc778ff12d8fed017c270ad2ac3220
diff --git a/runtime/oat.cc b/runtime/oat.cc
index c01f77c..6fe5d10 100644
--- a/runtime/oat.cc
+++ b/runtime/oat.cc
@@ -22,7 +22,7 @@
 namespace art {
 
 const uint8_t OatHeader::kOatMagic[] = { 'o', 'a', 't', '\n' };
-const uint8_t OatHeader::kOatVersion[] = { '0', '0', '7', '\0' };
+const uint8_t OatHeader::kOatVersion[] = { '0', '0', '8', '\0' };
 
 OatHeader::OatHeader() {
   memset(this, 0, sizeof(*this));