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/kt3874.kt

@@ -0,0 +1,35 @@
+fun test1(): String {
+    var r = ""
+    for (i in 1..2)  {
+        try {
+            r += "O"
+            continue
+        } finally {
+            r += "K"
+            break
+        }
+    }
+    return r
+}
+
+fun test2(): String {
+    var r = ""
+    for (i in 1..2)  {
+        try {
+            r += "O"
+            break
+        } finally {
+            r += "K"
+            continue
+        }
+    }
+    return r
+}
+
+fun box(): String {
+  if (test1() != "OK") return "fail1: ${test1()}"
+
+  if (test2() != "OKOK") return "fail2: ${test2()}"
+
+  return "OK"
+}