Invoke <clinit> where necessary.

This lets us run Long.toString and friends for integral types, though
we'll need a libcore hack to avoid ThreadLocals for the time being.

Change-Id: I04bba5914f1b7d00e4917922e65b9c27302a59ff
diff --git a/src/class_linker.cc b/src/class_linker.cc
index 211b87d..b8cd891 100644
--- a/src/class_linker.cc
+++ b/src/class_linker.cc
@@ -1177,7 +1177,7 @@
 
 bool ClassLinker::InitializeClass(Class* klass) {
   CHECK(klass->GetStatus() == Class::kStatusResolved ||
-        klass->GetStatus() == Class::kStatusError);
+      klass->GetStatus() == Class::kStatusError) << klass->GetStatus();
 
   Thread* self = Thread::Current();
 
@@ -1270,9 +1270,7 @@
 
   Method* clinit = klass->FindDeclaredDirectMethod("<clinit>", "()V");
   if (clinit != NULL) {
-    // JValue unused;
-    // TODO: dvmCallMethod(self, method, NULL, &unused);
-    // UNIMPLEMENTED(FATAL);
+    clinit->Invoke(self, NULL, NULL, NULL);
   }
 
   {