libutil: add hybrid support.

src/libs/util/Jamfile

@@ -7,10 +7,16 @@ UseHeaders [ FDirName $(HAIKU_TOP) headers compatibility bsd ] : true ;
 local defines = [ FDefines SCCSID=0 _BSD_SOURCE=1 ] ;
 SubDirCcFlags $(defines) ;
 
-StaticLibrary libutil.a :
-	fparseln.c
-	pidfile.c
-	realhostname.c
-	trimdomain.c
-;
+local architectureObject ;
+for architectureObject in [ MultiArchSubDirSetup ] {
+	on $(architectureObject) {
 
+		StaticLibrary [ MultiArchDefaultGristFiles libutil.a ] :
+			fparseln.c
+			pidfile.c
+			realhostname.c
+			trimdomain.c
+		;
+
+	}
+}