A lot of "DrScheme" -> "DrRacket"s.

original commit: de0cc7771b3f4be098cfa30e552f0acad3436a0e

collects/mrlib/scribblings/cache-image-snip.scrbl

@@ -7,7 +7,7 @@
 @defmodule[mrlib/cache-image-snip]{
 
 The @schememodname[mrlib/cache-image-snip] library provides the core
-data structure for DrScheme's @filepath{image.ss} teachpack. Images in
+data structure for DrRacket's @filepath{image.ss} teachpack. Images in
 the @filepath{image.ss} teachpack are instances of the
 @scheme[cache-image-snip%] class.}
 

collects/mrlib/scribblings/name-message.scrbl

@@ -120,7 +120,7 @@ and height. The @scheme[dc] argument is used for sizing.}
          void?]{
 
 Draws a button label like the one for the @onscreen{(define ...)} and
-filename buttons in the top-left corner of the DrScheme frame. Use
+filename buttons in the top-left corner of the DrRacket frame. Use
 this function to draw similar buttons.
 
 The basic idea is to create a canvas object whose on-paint method is

collects/mrlib/scribblings/tex-table.scrbl

@@ -15,7 +15,7 @@
                               1)))))]{
 
   This is an assocation list mapping the shortcut strings that
-  DrScheme uses with its @tt{control-\} (or @tt{command-\}) strings to
+  DrRacket uses with its @tt{control-\} (or @tt{command-\}) strings to
   their corresponding unicode characters. For example, it contains
   this mapping:
   @schemeblock[

collects/tests/mred/draw-info.txt

@@ -264,7 +264,7 @@ The "MrEd XOR" menu selects a icon:
   - "MrEd XOR" : initial icon, as described above
 
   - "PLT Middle" : middle area of the PLT logo (used when starting
-    DrScheme), same size as the MrEd icon. Make sure scaling works
+    DrRacket), same size as the MrEd icon. Make sure scaling works
     right (i.e., same section shown and scaled).
 
  - "PLT ^ MrEd" : "PLT Middle" masked by the MrEd icon.

collects/tests/mred/editor.rktl

@@ -128,7 +128,7 @@
        (run-save/load-tests pasteboard% pb-insert reset?))
      '(#t #f))
 
-;; Test DrScheme-style format change in `on-save':
+;; Test DrRacket-style format change in `on-save':
 (define (run-on-save-tests editor% insert)
   (let* ([editor+% (if (eq? editor% text%)
 		       (class editor%