Deprecate merge and introduce instead zip with transform.

Add zip with transform for Strings.

libraries/stdlib/test/collections/CollectionTest.kt

@@ -134,9 +134,9 @@ class CollectionTest {
     }
 
     @test
-    fun merge() {
+    fun zipTransform() {
         expect(listOf("ab", "bc", "cd")) {
-            listOf("a", "b", "c").merge(listOf("b", "c", "d")) { a, b -> a + b }
+            listOf("a", "b", "c").zip(listOf("b", "c", "d")) { a, b -> a + b }
         }
     }
 

libraries/stdlib/test/collections/SequenceTest.kt

@@ -120,9 +120,9 @@ public class SequenceTest {
         assertEquals("", sequenceOf(1).dropWhile { it < 200 }.joinToString(limit = 10))
     }
 
-    @test fun merge() {
+    @test fun zip() {
         expect(listOf("ab", "bc", "cd")) {
-            sequenceOf("a", "b", "c").merge(sequenceOf("b", "c", "d")) { a, b -> a + b }.toList()
+            sequenceOf("a", "b", "c").zip(sequenceOf("b", "c", "d")) { a, b -> a + b }.toList()
         }
     }