shuffle some unstable modules and fix doc dependencies

Includes a repair for mapping a collection name to a set of
linked paths.

original commit: 8a9d885774a1b2606257fe992b74b4393ee1cb91

pkgs/macro-debugger-pkgs/macro-debugger/info.rkt

@@ -5,11 +5,11 @@
 (define deps '("base"
                "compatibility-lib"
                "data-lib"
-               "drracket"
                "gui-lib"
                "images"
                "parser-tools-lib"
                "unstable-list-lib"
-               "macro-debugger-text-lib"))
+               "macro-debugger-text-lib"
+               "unstable"))
 (define build-deps '("scribble-lib"
                      "racket-doc"))

pkgs/macro-debugger-pkgs/macro-debugger/macro-debugger/syntax-browser/text.rkt

@@ -2,7 +2,7 @@
 (require racket/class
          racket/gui/base
          data/interval-map
-         drracket/arrow
+         unstable/arrow
          framework
          data/interval-map
          macro-debugger/syntax-browser/interfaces)

pkgs/macro-debugger-pkgs/macro-debugger/unstable/info.rkt

@@ -0,0 +1,4 @@
+#lang info
+
+(define scribblings
+  '(("unstable-find.scrbl" (multi-page) (experimental))))

pkgs/macro-debugger-pkgs/macro-debugger/unstable/unstable-find.scrbl

@@ -1,11 +1,12 @@
 #lang scribble/manual
-@(require scribble/eval "utils.rkt"
+@(require scribble/eval
+          unstable/scribblings/utils
           (for-label unstable/find racket/contract racket/shared racket/base))
 
 @(define the-eval (make-base-eval))
 @(the-eval '(require unstable/find racket/shared))
 
-@title[#:tag "find"]{Find}
+@unstable-title[#:tag "find"]{Find}
 @unstable[@author+email["Ryan Culpepper" "ryanc@racket-lang.org"]]
 
 @defmodule[unstable/find]