*boxContext => *box.Context	, *boxMacro => *box.Macro

Performs the following renamings:
* scala.reflect.macros.BlackboxContext to scala.reflect.macros.blackbox.Context
* scala.reflect.macros.BlackboxMacro to scala.reflect.macros.blackbox.Macro
* scala.reflect.macros.WhiteboxContext to scala.reflect.macros.whitebox.Context
* scala.reflect.macros.WhiteboxMacro to scala.reflect.macros.whitebox.Macro

https://groups.google.com/forum/#!topic/scala-internals/MX40-dM28rk