Build scripts dynamically add Kotlin compiler JARs into classpath so if a build scripts module depends on KotlinJavaRuntime library it may end up with Kotlin JARs from two different version of Kotlin in classpath and compilation may fail (IDEA-177205). To fix the problem Kotlin files were extracted into a separate 'images-build-scripts' module and KotlinJavaRuntime library was removed from dependencies of build script modules. This won't be needed when we change build scripts to start compilation in a separate process.