Uniformly check JNI versions everywhere we use them.

Also fix JNI GetEnv logging.

Change-Id: Id2a5df4cb2e6572675945f911bfcbe17ba7a2abf
diff --git a/src/check_jni.cc b/src/check_jni.cc
index e53e1c4..c6a628f 100644
--- a/src/check_jni.cc
+++ b/src/check_jni.cc
@@ -2062,7 +2062,7 @@
 
   static jint GetEnv(JavaVM* vm, void** env, jint version) {
     ScopedCheck sc(vm, true, __FUNCTION__);
-    sc.Check(true, "v", vm);
+    sc.Check(true, "vpI", vm);
     return CHECK_JNI_EXIT("I", BaseVm(vm)->GetEnv(vm, env, version));
   }