Add the data files used by the testsuite to the src tarball

And rename a test datafile to have the normal extension

Author: dcoutts

test/Test.hs

@@ -166,7 +166,7 @@ test_right_dictionary = do
 
 test_trailing_data :: Assertion
 test_trailing_data =
-  withSampleData "two-files.gzip" $ \hnd -> do
+  withSampleData "two-files.gz" $ \hnd -> do
     let decomp = decompressIO gzipFormat defaultDecompressParams
     chunks <- assertDecompressOkChunks hnd decomp
     case chunks of

test/data/two-files.gzip renamed to test/data/two-files.gz

@@ -21,6 +21,10 @@ cabal-version:   >= 1.10
 extra-source-files: cbits/crc32.h cbits/inffast.h cbits/inflate.h
                     cbits/trees.h cbits/deflate.h cbits/inffixed.h
                     cbits/inftrees.h cbits/zutil.h
+                    -- test data files
+                    test/data/bad-crc.gz test/data/custom-dict.zlib
+                    test/data/custom-dict.zlib-dict test/data/hello.gz
+                    test/data/not-gzip test/data/two-files.gz
                     -- demo programs:
                     examples/gzip.hs examples/gunzip.hs