THRIFT-373. Get some missing files into the release tarballs

- Added some stuff to EXTRA_DIST.
- Added some non-compiled sources to a C++ test.
- Made lib/perl/test a SUBDIR of lib/perl.

The last is a revert of r766558, but I moved the "Types.pm" rules in
lib/perl/test/Makefile.am to the check-local target, so it should still
work as expected (per THRIFT-461).

git-svn-id: https://svn.apache.org/repos/asf/incubator/thrift/trunk@777681 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/Makefile.am b/Makefile.am
index 0c196ce..bd56601 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -25,4 +25,4 @@
 	find $(distdir) -name '.[a-zA-Z0-9]*' | xargs rm -rf
 
 EXTRA_DIST = bootstrap.sh cleanup.sh print_version.sh doc tutorial contrib \
-             CONTRIBUTORS LICENSE
+             CONTRIBUTORS LICENSE CHANGES DISCLAIMER NOTICE