compiler testdata: s/trait/interface

compiler/testData/diagnostics/tests/dataFlowInfoTraversal/ArrayGetSetConvention.kt

@@ -1,6 +1,6 @@
 // !CHECK_TYPE
 
-trait G {
+interface G {
     fun get(x: Int, y: Int): Int = x + y
     fun set(x: Int, y: Int, value: Int) {}
 }

compiler/testData/diagnostics/tests/dataFlowInfoTraversal/Assignment.kt

@@ -1,5 +1,5 @@
-trait A
-trait B : A {
+interface A
+interface B : A {
     fun foo()
 }
 

compiler/testData/diagnostics/tests/dataFlowInfoTraversal/AssignmentInInitializer.kt

@@ -1,8 +1,8 @@
 // KT-2825  DataFlowInfo is not retained after assignment
 
-trait A
+interface A
 
-trait B : A {
+interface B : A {
     fun foo()
 }
 

compiler/testData/diagnostics/tests/dataFlowInfoTraversal/BinaryExpressionCompareToConvention.kt

@@ -1,8 +1,8 @@
 // !CHECK_TYPE
 
-trait A
+interface A
 
-trait B : A
+interface B : A
 fun B.compareTo(b: B) = if (this == b) 0 else 1
 
 fun foo(a: A): Boolean {

compiler/testData/diagnostics/tests/dataFlowInfoTraversal/BinaryExpressionEqualsConvention.kt

@@ -1,7 +1,7 @@
 // !CHECK_TYPE
 
-trait A
-trait B : A
+interface A
+interface B : A
 
 fun foo1(a: A, b: B): Boolean {
     val result = (a as B) == b

compiler/testData/diagnostics/tests/dataFlowInfoTraversal/BinaryExpressionPlusConvention.kt

@@ -1,8 +1,8 @@
 // !CHECK_TYPE
 
-trait A
+interface A
 
-trait B : A
+interface B : A
 fun B.plus(b: B) = if (this == b) b else this
 
 fun foo(a: A): B {

compiler/testData/diagnostics/tests/dataFlowInfoTraversal/smartcasts/SmartcastAmbiguitites.kt

@@ -1,4 +1,4 @@
-trait B {
+interface B {
   fun bar() {}
 }
 

compiler/testData/diagnostics/tests/dataFlowInfoTraversal/smartcasts/SmartcastsForStableIdentifiers.kt

@@ -74,7 +74,7 @@ fun Any?.foo() : Int {
 }
 
 
-trait T {}
+interface T {}
 
 open class C {
     fun foo() {