Extract Function: Support multiple output values

idea/testData/debugger/tinyApp/outs/errors.out

@@ -2,6 +2,11 @@ LineBreakpoint created at errors.kt:13
 !JDK_HOME!\bin\java -agentlib:jdwp=transport=dt_socket,address=!HOST_NAME!:!HOST_PORT!,suspend=y,server=n -Dfile.encoding=!FILE_ENCODING! -classpath !APP_PATH!\classes;!KOTLIN_RUNTIME!;!CUSTOM_LIBRARY!;!RT_JAR! errors.ErrorsPackage
 Connected to the target VM, address: '!HOST_NAME!:PORT_NAME!', transport: 'socket'
 errors.kt:12
+Compile bytecode for prop += 1
+prop2 +=2
+prop + prop2
+
+// RESULT: instance of kotlin.Triple(id=ID): Lkotlin/Triple;
 Disconnected from the target VM, address: '!HOST_NAME!:PORT_NAME!', transport: 'socket'
 
 Process finished with exit code 0

idea/testData/debugger/tinyApp/outs/vars.out

@@ -4,6 +4,9 @@ Connected to the target VM, address: '!HOST_NAME!:PORT_NAME!', transport: 'socke
 vars.kt:6
 Compile bytecode for a
 Compile bytecode for a += 1
+a
+
+// RESULT: 3: I
 Disconnected from the target VM, address: '!HOST_NAME!:PORT_NAME!', transport: 'socket'
 
 Process finished with exit code 0

idea/testData/debugger/tinyApp/src/evaluate/singleBreakpoint/errors.kt.fragment

@@ -2,4 +2,4 @@ prop += 1
 prop2 +=2
 prop + prop2
 
-// RESULT: Cannot perform an action because this code fragment changes more than one variable: var prop2: Int, var prop: Int
+// RESULT: instance of kotlin.Triple(id=ID): Lkotlin/Triple;

idea/testData/debugger/tinyApp/src/evaluate/singleBreakpoint/vars.kt

@@ -10,8 +10,5 @@ fun main(args: Array<String>) {
 // EXPRESSION: a
 // RESULT: 2: I
 
-// EXPRESSION: a += 1
-// RESULT: 3: I
-
 // EXPRESSION: a
 // RESULT: 2: I

idea/testData/debugger/tinyApp/src/evaluate/singleBreakpoint/vars.kt.fragment

@@ -0,0 +1,4 @@
+a += 1
+a
+
+// RESULT: 3: I