Move docs for racket/gui/init and racket/gui/interactive

Previously they were part of the base repo.

gui-doc/scribblings/gui/gui.scrbl

@@ -52,6 +52,7 @@ Both parts of the toolbox rely extensively on the
 @include-section["prefs.scrbl"]
 @include-section["dynamic.scrbl"]
 @include-section["startup.scrbl"]
+@include-section["init.scrbl"]
 @include-section["libs.scrbl"]
 
 @;------------------------------------------------------------------------

gui-doc/scribblings/gui/init.scrbl

@@ -0,0 +1,26 @@
+#lang scribble/doc
+@(require "common.rkt"
+          (for-label racket/gui/dynamic racket/pretty racket/gui/base setup/dirs))
+
+@title{Init Libraries}
+
+@defmodule*/no-declare[(racket/gui/init)]{The
+@racketmodname[racket/gui/init] library is the default start-up
+library for GRacket. It re-exports the @racketmodname[racket/init] and
+@racketmodname[racket/gui/base] libraries, and it sets
+@racket[current-load] to use @racket[text-editor-load-handler].}
+
+@defmodule*/no-declare[(racket/gui/interactive)]{
+ Similar to @racketmodname[racket/gui/interactive], but for
+ GRacket. This library can be changed by modifying 
+ @racket['gui-interactive-file] in the @filepath{config.rktd}
+ file in @racket[(find-config-dir)].
+
+ This library runs the 
+ @racket[(find-graphical-system-path 'init-file)] file in
+ the users home directory if it exists, rather than their 
+ @racket[(find-system-path 'init-file)]. Unlike 
+ @racketmodname[racket/interactive], this library does not
+ start @racketmodname[xrepl].
+
+ @history[#:added "1.27"]}

gui-lib/info.rkt

@@ -30,4 +30,4 @@
 
 (define pkg-authors '(mflatt robby))
 
-(define version "1.26")
+(define version "1.27")