Allow to use folders for gradle configuration tests

idea/testData/configuration/gradle/rcVersion/build_after.gradle

@@ -0,0 +1,30 @@
+apply plugin: 'java'
+apply plugin: 'kotlin'
+
+sourceCompatibility = 1.5
+version = '1.0'
+
+repositories {
+  mavenCentral()
+    maven {
+        url 'http://dl.bintray.com/kotlin/kotlin-eap'
+    }
+}
+
+dependencies {
+  testCompile group: 'junit', name: 'junit', version: '4.11'
+    compile "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
+}
+buildscript {
+    ext.kotlin_version = '$VERSION$'
+    repositories {
+        maven {
+            url 'http://dl.bintray.com/kotlin/kotlin-eap'
+        }
+    }
+    dependencies {
+        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
+    }
+}
+
+// VERSION: $VERSION$

idea/testData/configuration/gradle/rcVersion/build_before.gradle

@@ -0,0 +1,14 @@
+apply plugin: 'java'
+
+sourceCompatibility = 1.5
+version = '1.0'
+
+repositories {
+  mavenCentral()
+}
+
+dependencies {
+  testCompile group: 'junit', name: 'junit', version: '4.11'
+}
+
+// VERSION: 1.0.1-rc-26-IJ143-42