Avoid serlialization for unrelated Java source-based classes

There is no need to track unknown (not being tracked before)
classes content of which we didn't request

 #KT-17621 Fixed

core/descriptors.jvm/src/org/jetbrains/kotlin/load/java/lazy/descriptors/LazyJavaClassDescriptor.kt

@@ -156,6 +156,11 @@ class LazyJavaClassDescriptor(
         }
     }
 
+    // Checks if any part of compiler has requested scope content
+    // It's necessary for IC to figure out if there is a need to track symbols in the class
+    fun wasScopeContentRequested() =
+            getUnsubstitutedMemberScope().wasContentRequested() || staticScope.wasContentRequested()
+
     override fun getSealedSubclasses(): Collection<ClassDescriptor> = emptyList()
 
     override fun toString() = "Lazy Java class ${this.fqNameUnsafe}"

core/descriptors.jvm/src/org/jetbrains/kotlin/load/java/lazy/descriptors/LazyJavaScope.kt

@@ -67,6 +67,8 @@ abstract class LazyJavaScope(protected val c: LazyJavaResolverContext) : MemberS
 
     protected val declaredMemberIndex: NotNullLazyValue<DeclaredMemberIndex> = c.storageManager.createLazyValue { computeMemberIndex() }
 
+    fun wasContentRequested() = declaredMemberIndex.isComputed()
+
     protected abstract fun computeMemberIndex(): DeclaredMemberIndex
 
     // Fake overrides, values()/valueOf(), etc.