Use JvmName on kotlin.Metadata parameters to improve public API

#KT-26359 Fixed

libraries/stdlib/jvm/runtime/kotlin/Metadata.kt

@@ -7,7 +7,7 @@ package kotlin
 
 /**
  * This annotation is present on any class file produced by the Kotlin compiler and is read by the compiler and reflection.
- * Parameters have very short names on purpose: these names appear in the generated class files, and we'd like to reduce their size.
+ * Parameters have very short JVM names on purpose: these names appear in all generated class files, and we'd like to reduce their size.
  */
 @Retention(AnnotationRetention.RUNTIME)
 @Target(AnnotationTarget.CLASS)
@@ -24,35 +24,42 @@ public annotation class Metadata(
      *
      * The class file with a kind not listed here is treated as a non-Kotlin file.
      */
-    val k: Int = 1,
+    @get:JvmName("k")
+    val kind: Int = 1,
     /**
      * The version of the metadata provided in the arguments of this annotation.
      */
-    val mv: IntArray = [],
+    @get:JvmName("mv")
+    val metadataVersion: IntArray = [],
     /**
      * The version of the bytecode interface (naming conventions, signatures) of the class file annotated with this annotation.
      */
-    val bv: IntArray = [],
+    @get:JvmName("bv")
+    val bytecodeVersion: IntArray = [],
     /**
      * Metadata in a custom format. The format may be different (or even absent) for different kinds.
      */
-    val d1: Array<String> = [],
+    @get:JvmName("d1")
+    val data1: Array<String> = [],
     /**
      * An addition to [d1]: array of strings which occur in metadata, written in plain text so that strings already present
      * in the constant pool are reused. These strings may be then indexed in the metadata by an integer index in this array.
      */
-    val d2: Array<String> = [],
+    @get:JvmName("d2")
+    val data2: Array<String> = [],
     /**
      * An extra string. For a multi-file part class, internal name of the facade class.
      */
-    val xs: String = "",
+    @get:JvmName("xs")
+    val extraString: String = "",
     /**
      * Fully qualified name of the package this class is located in, from Kotlin's point of view, or empty string if this name
      * does not differ from the JVM's package FQ name. These names can be different in case the [JvmPackageName] annotation is used.
      * Note that this information is also stored in the corresponding module's `.kotlin_module` file.
      */
     @SinceKotlin("1.2")
-    val pn: String = "",
+    @get:JvmName("pn")
+    val packageName: String = "",
     /**
      * An extra int. Bits of this number represent the following flags:
      *
@@ -63,5 +70,6 @@ public annotation class Metadata(
      *   the major.minor version of this metadata ([mv]).
      */
     @SinceKotlin("1.1")
-    val xi: Int = 0
+    @get:JvmName("xi")
+    val extraInt: Int = 0
 )