Add missing test zip file to distribution.
diff --git a/regress/Makefile.am b/regress/Makefile.am
index c2b96ec..9b29657 100644
--- a/regress/Makefile.am
+++ b/regress/Makefile.am
@@ -42,6 +42,7 @@
 	testextrabytes.zip \
 	testfile.txt \
 	testfile.zip \
+	testfile-UTF8.zip \
 	testnottorrent.zip \
 	teststored.zip \
 	testtorrent.tzip