Issue #23285: Install new test directory.
diff --git a/Makefile.pre.in b/Makefile.pre.in
index 55032d0..d9ee777 100644
--- a/Makefile.pre.in
+++ b/Makefile.pre.in
@@ -1143,6 +1143,7 @@
 		test/audiodata \
 		test/capath test/data \
 		test/cjkencodings test/decimaltestdata test/xmltestdata \
+		test/eintrdata \
 		test/imghdrdata \
 		test/subprocessdata test/sndhdrdata test/support \
 		test/tracedmodules test/encoded_modules \