Refactoring: Modify test for incompatible ABI version

compiler/testData/cli/jvm/wrongAbiVersionLib/ClassWithWrongAbiVersion.kt.txt

@@ -1,13 +0,0 @@
-/*
-To regenerate this test:
-  1. Change JvmAbi.VERSION to -1
-  2. Run 'ant dist'
-  3. Rename this file and wrong-package: delete 'txt' extension
-  4. Compile two files with the newly built compiler from dist/
-  5. Rename files back: add 'txt' extension
-  6. Change JvmAbi.VERSION back to its old value
-  7. Run 'ant dist'
-After these steps, the test should succeed
-*/
-
-class ClassWithWrongAbiVersion

compiler/testData/cli/jvm/wrongAbiVersionLib/readme.txt

@@ -0,0 +1,13 @@
+/*
+To regenerate this test:
+  1. Change JvmAbi.VERSION to -1
+  2. Run 'ant dist'
+  3. Compile files with the newly built compiler from dist/
+
+    cd compiler/testData/cli/jvm/wrongAbiVersionLib
+    ../../../../../dist/kotlinc/bin/kotlinc -d bin src/*
+
+  4. Change JvmAbi.VERSION back to its old value
+  5. Run 'ant dist'
+After these steps, the test should succeed
+*/

compiler/testData/cli/jvm/wrongAbiVersionLib/src/ClassWithWrongAbiVersion.kt

@@ -0,0 +1 @@
+class ClassWithWrongAbiVersion