Add needed EXTRA_DIST for libusbx.

compat/libusb-1.0/Makefile.am

@@ -2,7 +2,7 @@ AUTOMAKE_OPTIONS = dist-bzip2 no-dist-gzip
 ACLOCAL_AMFLAGS = -I m4
 DISTCLEANFILES = libusb-1.0.pc
 MAINTAINERCLEANFILES = ChangeLog
-EXTRA_DIST = TODO PORTING
+EXTRA_DIST = TODO PORTING libusb/libusb-1.0.def libusb/version_nano.h
 SUBDIRS = libusb
 
 pkgconfigdir=$(libdir)/pkgconfig