dtappbuilder: use libXpm directly.

cde/programs/dtappbuilder/src/abmf/lib_func_strings.c

@@ -628,7 +628,7 @@ static LibFuncRec abmfP_lrc_set_label_from_xpm_data =
     "        window = RootWindowOfScreen(screen);\n"
     "    }\n"
     "\n"
-    "    status = _DtXpmCreatePixmapFromData(\n"
+    "    status = XpmCreatePixmapFromData(\n"
     "            display,\n"
     "            window,\n"
     "            xpmData,\n"

cde/programs/dtappbuilder/src/abmf/lib_funcs.c

@@ -70,6 +70,7 @@
 #include <stdlib.h>
 #include <Tt/tttk.h>
 #include <X11/Intrinsic.h>
+#include <X11/xpm.h>
 #include <Xm/XmStrDefs.h>
 #include <Xm/Xm.h>
 #include <Xm/Form.h>
@@ -80,7 +81,6 @@
 #include <Dt/HelpDialog.h>
 #include <Dt/HelpQuickD.h>
 #include <Dt/Session.h>
-#include <Dt/xpm.h>		/* doesn't exist in CDE, but OK for testing */
 
 
 /*
@@ -906,7 +906,7 @@ dtb_set_label_from_xpm_data(
         window = RootWindowOfScreen(screen);
     }
 
-    status = _DtXpmCreatePixmapFromData(
+    status = XpmCreatePixmapFromData(
             display,
             window,
             xpmData,