Fix FTBFS on openbsd because 'abs' function in kcontrol/displayconfig

Signed-off-by: François Andriot <francois.andriot@free.fr>"

kcontrol/displayconfig/displayconfig.cpp

@@ -57,6 +57,9 @@
 #include "displayconfig.h"
 
 using namespace std;
+#ifdef __OpenBSD__
+#define abs __gnu_cxx::abs
+#endif
 
 /**** DLL Interface ****/
 typedef KGenericFactory<KDisplayConfig, TQWidget> KDisplayCFactory;