STYLE: fix docs

Source/cmSetSourceFilesPropertiesCommand.h

@@ -60,11 +60,9 @@ public:
         "to change, and then provide the values you want to set next.  You "
         "can make up your own properties as well.  "
         "The following are used by CMake.  "
-        "The ABSTRACT flag (boolean) appears to have some effect on the VTK "
-        "wrapper commands.  "
-        "If WRAP_EXCLUDE (boolean) is true then the wrapping commands "
-        "(FLTKWrapUI, QTWrapCC, QTWrapUI, VTKMakeInstantiator, VTKWrapJava, "
-        "VTKWrapPython, and VTKWrapTcl) will ignore this file.  "
+        "The ABSTRACT flag (boolean) is used by some class wrapping commands. "
+        "If WRAP_EXCLUDE (boolean) is true then many wrapping commands "
+        "will ignore this file.  "
         "If GENERATED (boolean) is true then it is not an error if this "
         "source file does not exist when it is added to a target.  Obviously, "
         "it must be created (presumably by a custom command) before the "