File openobex-libusb-check.patch of Package openobex

http://dev.zuckschwerdt.org/openobex/ticket/2
================================================================================
Index: acinclude.m4
===================================================================
--- acinclude.m4.orig
+++ acinclude.m4
@@ -158,7 +158,7 @@ AC_DEFUN([AC_PATH_USB], [
 		;;
 	*)
 		PKG_CHECK_MODULES(USB, libusb, usb_lib_found=yes, AC_MSG_RESULT(no))
-		AC_CHECK_FILE(${prefix}/lib/pkgconfig/libusb.pc, REQUIRES="libusb")
+		AC_CHECK_FILE(${libdir}/pkgconfig/libusb.pc, REQUIRES="libusb")
 		;;
 	esac
 	AC_SUBST(USB_CFLAGS)