Adjusted docs-complete to print a different message when there are no docs at all

and ... ummm... documented docs-complete

original commit: d3c04ae701ab550364d1b6059c78b17434001e48

collects/tests/utils/scribblings.scrbl

@@ -0,0 +1,31 @@
+#lang scribble/doc
+
+@(require scribble/manual
+          (for-label racket))
+
+@title{Internal Testing Utilities} 
+
+@section{Checking documentation completeness}
+@defmodule[tests/utils/docs-complete]
+
+@defproc[(check-docs [lib symbol?]
+                     [#:skip skip 
+                             (or/c regexp? 
+                                   symbol?
+                                   (listof (or/c regexp? symbol?))
+                                   (-> symbol? any)
+                                   #f)
+                             #f])
+         any]{
+              
+Checks to see if the module path named by @racket[lib] (e.g. @racket['racket/list])
+has documented all of its exports and prints an error message to
+@racket[(current-error-port)] if not.
+
+If @racket[skip] is a regexp, then exporting matching that regexp
+are ignored. If it is a symbol, then that export is ignored. If
+it is a list of symbols and regexps, then any exporting matching any of the 
+symbols or regexps are ignored. If it is a function, the function is treated
+as a predicate and passed each export of the module. If @racket[skip] is
+@racket[#f], no exports are skipped.
+}