Properly process nested try and loop blocks

KT-3894: Loops and finally: finally block executed twice when break and return exists in try/finally block
KT-3874: Compilation error on try catch block contains break and continue
KT-3869: Loops and finally: outer finally block not run

 #KT-3869 Fixed
 #KT-3894 Fixed
 #KT-3874 Fixed

compiler/testData/codegen/box/finally/loopAndFinally.kt

@@ -0,0 +1,69 @@
+//KT-3869 Loops and finally: outer finally block not run
+
+class MyString {
+    var s = ""
+    fun plus(x : String) : MyString {
+        s += x
+        return this
+    }
+
+    fun toString(): String {
+        return s
+    }
+}
+
+fun test1() : MyString {
+    var r = MyString()
+    try {
+        r + "Try"
+
+        while(r.toString() != "") {
+            return r + "Loop"
+        }
+
+        return r + "Fail"
+    } finally {
+        r + "Finally"
+    }
+}
+
+fun test2() : MyString {
+    var r = MyString()
+    try {
+        r + "Try"
+
+        do {
+            if (r.toString() != "") {
+                return r + "Loop"
+            }
+        } while (r.toString() != "")
+
+        return r + "Fail"
+    } finally {
+        r + "Finally"
+    }
+}
+
+fun test3() : MyString {
+    var r = MyString()
+    try {
+        r + "Try"
+
+        for(i in 1..2) {
+            r + "Loop"
+            return r
+        }
+
+        return r + "Fail"
+    } finally {
+        r + "Finally"
+    }
+}
+
+fun box(): String {
+    if (test1().toString() != "TryLoopFinally") return "fail1: ${test1()}"
+    if (test2().toString() != "TryLoopFinally") return "fail2: ${test2()}"
+    if (test3().toString() != "TryLoopFinally") return "fail3: ${test3()}"
+
+    return "OK"
+}