Code Generation for Standard Library

Some of the code in the standard library is created by code generation based on templates. For example, many Array methods need to be implemented separately for Array<T>, ByteArray, ShortArray, IntArray, etc.

To run the code generator from the libraries directory of a kotlin checkout, use the following command:

./gradlew :tools:kotlin-stdlib-gen:run

Note: on Windows type gradlew without the leading ./

This then runs the script which generates a significant part of stdlib sources from the templates authored with a special kotlin based DSL.