Multiple fixes of JS source maps

- elvis expression with complex RHS
- destructuring declarations
- decomposition of `var` statement (for example, in case of
  inline destructuring functions)
- `is` LHS &&/|| inline fun RHS
- argument assignment to temporary var on inline call site
- assignment of `next()` result to temporary var in `for` expression
- rethrow statement in exception handler

js/js.translator/testData/lineNumbers/elvis.kt

@@ -0,0 +1,12 @@
+var log = ""
+
+fun box(x: String?) {
+    log +=
+            x
+            ?:
+            try { foo() } finally { log += "finally" }
+}
+
+fun foo() = "bar"
+
+// LINES: 8 7 7 4 4 4 5 5 7 7 7 7 * 5 4 5 10 10 10 * 1 * 1