Support single-underscore named variables in JVM backend

There are mainly two kind of changes:
- skipping 'componentX' calls for destructuring entries named _
- fixing local variable table for them
 - skip entries for destructuring entries named _
 - use $noName_<i> format for lambda parameters named _

 #KT-3824 Fixed
 #KT-2783 Fixed

compiler/testData/checkLocalVariablesTable/underscoreNames.kt

@@ -0,0 +1,34 @@
+data class A(val x: Double = 1.0, val y: String = "", val z: Char = '0')
+
+fun foo(a: A, block: (A, String, Int) -> String): String = block(a, "", 1)
+
+val arrayOfA: Array<A> = Array(1) { A() }
+
+fun box() {
+
+    foo(A()) {
+        (x, _, y), _, w ->
+
+        val (a, _, c) = A()
+        val (_, `_`, d) = A()
+
+        for ((_, q) in arrayOfA) {
+
+        }
+
+        ""
+    }
+}
+
+// METHOD : UnderscoreNamesKt$box$1.invoke(LA;Ljava/lang/String;I)Ljava/lang/String;
+// VARIABLE : NAME=q TYPE=Ljava/lang/String; INDEX=15
+// VARIABLE : NAME=d TYPE=C INDEX=11
+// VARIABLE : NAME=_ TYPE=Ljava/lang/String; INDEX=10
+// VARIABLE : NAME=c TYPE=C INDEX=9
+// VARIABLE : NAME=a TYPE=D INDEX=7
+// VARIABLE : NAME=this TYPE=LUnderscoreNamesKt$box$1; INDEX=0
+// VARIABLE : NAME=$x_$_$_y TYPE=LA; INDEX=1
+// VARIABLE : NAME=$noName_1 TYPE=Ljava/lang/String; INDEX=2
+// VARIABLE : NAME=w TYPE=I INDEX=3
+// VARIABLE : NAME=x TYPE=D INDEX=4
+// VARIABLE : NAME=y TYPE=C INDEX=6