Append newline to EOF for .txt test data files

Reverts and fixes 102f0d3

compiler/testData/loadJava/compiledKotlin/fun/vararg/VarargInt.txt

@@ -3,4 +3,4 @@ package test
 public open class VarargInt {
     /*primary*/ public constructor VarargInt()
     public open fun vararg(/*0*/ vararg p0: kotlin.Int /*kotlin.IntArray*/): kotlin.Unit
-}
+}

compiler/testData/loadJava/compiledKotlin/fun/vararg/VarargString.txt

@@ -3,4 +3,4 @@ package test
 public open class VarargString {
     /*primary*/ public constructor VarargString()
     public open fun vararg(/*0*/ vararg p0: kotlin.String? /*kotlin.Array<kotlin.String?>*/): kotlin.Unit
-}
+}

compiler/testData/loadJava/compiledKotlin/fun/vararg/nonLastVararg.txt

@@ -1,4 +1,4 @@
 package test
 
 internal fun f(/*0*/ vararg t: kotlin.String /*kotlin.Array<kotlin.String>*/, /*1*/ f: () -> kotlin.Unit): kotlin.Unit
-internal fun f(/*0*/ vararg t: kotlin.Int /*kotlin.IntArray*/, /*1*/ f: () -> kotlin.Unit): kotlin.Unit
+internal fun f(/*0*/ vararg t: kotlin.Int /*kotlin.IntArray*/, /*1*/ f: () -> kotlin.Unit): kotlin.Unit