Add JvmMultifileClass to preserve public API surface

libraries/stdlib/common/src/kotlin/MathH.kt

@@ -14,6 +14,10 @@
  * limitations under the License.
  */
 
+@file:kotlin.jvm.JvmMultifileClass
+@file:kotlin.jvm.JvmName("MathKt")
+
+
 package kotlin.math
 
 

libraries/stdlib/jvm/src/kotlin/util/MathJVM.kt

@@ -15,6 +15,7 @@
  */
 
 @file:JvmVersion
+@file:JvmMultifileClass
 @file:JvmName("MathKt")
 
 package kotlin.math