dtfile: added Xinerama support to dialog positioning routines

cde/programs/dtfile/Imakefile

@@ -8,17 +8,21 @@ MakeSubdirs($(SUBDIRS))
 ForceSubdirs($(SUBDIRS))
 DependSubdirs($(SUBDIRS))
 
+#if CDE_USEXINERAMA
+XINOPT = -DUSE_XINERAMA
+XINLIB = -lDtXinerama -lXinerama
+#endif
 
 DEPEND_DEFINES = $(DEPENDDEFINES)
 DEFINES = -DMULTIBYTE -DSHAPE -D_ILS_MACROS -DSUN_PERF \
 	-DCDE_INSTALLATION_TOP=\"$(CDE_INSTALLATION_TOP)\" \
 	-DCDE_CONFIGURATION_TOP=\"$(CDE_CONFIGURATION_TOP)\" \
-	-DKORNSHELL=\"$(KORNSHELL)\"
+	-DKORNSHELL=\"$(KORNSHELL)\" $(XINOPT)
 
 INCLUDES = -I./dtcopy
 
 DEPLIBS = DepDtClientLibs
-LOCAL_LIBRARIES = DtClientLibs
+LOCAL_LIBRARIES = DtClientLibs $(XINLIB)
 SYS_LIBRARIES = DtClientSysLibs DtClientExtraLibs
 
 #ifdef AlphaArchitecture