157 warnings: remove -DXK_MISCELLANY from Makefiles

Fixes the following warning:

In file included from ../../../imports/x11/include/X11/Xutil.h:54,
                 from ../../../imports/x11/include/X11/Intrinsic.h:54,
                 from Action.c:64:
../../../imports/x11/include/X11/keysym.h:49:1: warning: "XK_MISCELLANY" redefined
<command-line>: warning: this is the location of the previous definition

<keysym.h> which includes all key symbols and loads <keysymdef.h>
is automaticlly included by the X Toolkit.

This patch removes #include <keysymdef.h> whenever not needed,
and adds #define XK_MISCALLANY in the source code where required.

cde/programs/util/dttypes/Imakefile

@@ -1,6 +1,5 @@
 XCOMM $XConsortium: Imakefile /main/8 1996/10/09 14:11:13 drk $
 
-        DEFINES = -DXK_MISCELLANY
        INCLUDES = -I.
 
 DEPLIBS = $(DEPDTSVCLIB) $(DEPTTLIB) $(DEPXMLIB) $(DEPXTOOLLIB) $(DEPXPLIB) $(DEPXLIB)