Always checkout/checkin text files with lf endings

Different line endings on linux/windows prevents gradle from reusing
build cache since endings make task inputs completely different between
systems

compiler/testData/diagnostics/tests/redeclarations/PropertyAndInnerClass.kt

@@ -1,13 +1,13 @@
-public class A() {
-    public val <!REDECLARATION!>FOO<!>: String = "test"
-
-    public class <!REDECLARATION!>FOO<!>() { }
-}
-
-public class B() {
-   companion object {
-      public val <!REDECLARATION!>FOO<!>: String = "test"
-      
-      public class <!REDECLARATION!>FOO<!>() { }
-   }
-}
+public class A() {
+    public val <!REDECLARATION!>FOO<!>: String = "test"
+
+    public class <!REDECLARATION!>FOO<!>() { }
+}
+
+public class B() {
+   companion object {
+      public val <!REDECLARATION!>FOO<!>: String = "test"
+      
+      public class <!REDECLARATION!>FOO<!>() { }
+   }
+}