Applied patch #3120699 with modifications.

tests/README.txt

@@ -0,0 +1,13 @@
+This directory contains the (fledgling) test suite for Expat.  The
+tests provide general unit testing and regression coverage.  The tests
+are not expected to be useful examples of Expat usage; see the
+examples/ directory for that.
+
+The Expat tests use a partial internal implementation of the "Check"
+unit testing framework for C. More information on Check can be found at:
+
+        http://check.sourceforge.net/
+
+Expat must be built and, depending on platform, must be installed, before "make check" can be executed.
+
+This test suite can all change in a later version.