dtterm: Add libutempter support for utmp/wtmp updates.

cde/programs/dtterm/DtTermMain.c

@@ -840,7 +840,9 @@ SignalHandler
 {
     DebugF('s', 10, fprintf(stderr, ">>SignalHandler() starting\n"));
     _DtTermPrimPtyCleanup();
+#ifndef HAS_UTEMPTER_LIBRARY
     _DtTermPrimUtmpCleanup();
+#endif
     _DtTermPrimLogFileCleanup();
     DebugF('s', 10, fprintf(stderr, ">>SignalHandler() finished\n"));
     (void) exit(0);

cde/programs/dtterm/Imakefile

@@ -18,6 +18,10 @@ DEFINES = $(ARCHITECTURE_DEFINES) -DSUN_TERMINAL_SERVER
 EXTRA_DEFINES = -DBUILD_HPVUE -DHPVUE
 #endif	/* Build_HpVue */
 
+#if defined(HasUtempterLibrary) && HasUtempterLibrary
+EXTRA_DEFINES = -DHAS_UTEMPTER_LIBRARY
+#endif
+
 #ifdef SunArchitecture
 HELPLIB = $(DTSVCLIB) $(TTLIB)
 DEPHELPLIB = $(DEPDTSVCLIB) $(DEPTTLIB)