Add @JvmStatic Intention: Support functions/properties in objects

Also eliminate unnecessary object instance references on Java call sites

 #KT-20095 Fixed

idea/testData/multiFileIntentions/addJvmStaticToObjectFun/before/test/test.kt

@@ -0,0 +1,5 @@
+package test
+
+object O {
+    fun <caret>foo(s: String) {}
+}