Allow to build zlib and lzma statically

This should fix issues on Darwin.

3rdparty/zlib/test/Test/Codec/Compression/Zlib/Stream.hs

@@ -0,0 +1,40 @@
+{-# OPTIONS_GHC -fno-warn-orphans #-}
+
+-- | Test code and properties for "Codec.Compression.Zlib.Stream"
+--
+module Test.Codec.Compression.Zlib.Stream where
+
+import Codec.Compression.Zlib.Internal
+import Test.QuickCheck
+
+
+instance Arbitrary Format where
+  -- GZipOrZlib omitted since it's not symmetric
+  arbitrary = elements [gzipFormat, zlibFormat, rawFormat]
+
+
+instance Arbitrary Method where
+   arbitrary = return deflateMethod
+
+
+instance Arbitrary CompressionLevel where
+  arbitrary = elements $ [defaultCompression, noCompression,
+                          bestCompression, bestSpeed]
+                      ++ map compressionLevel [1..9]
+
+
+instance Arbitrary WindowBits where
+  arbitrary = elements $ defaultWindowBits:map windowBits [9..15]
+
+
+instance Arbitrary MemoryLevel where
+  arbitrary = elements $ [defaultMemoryLevel, minMemoryLevel, maxMemoryLevel]
+                      ++ [memoryLevel n | n <- [1..9]]
+
+
+
+instance Arbitrary CompressionStrategy where
+  arbitrary = elements $ [defaultStrategy, filteredStrategy, huffmanOnlyStrategy]
+                   -- These are disabled by default in the package
+                   -- as they are only available with zlib >=1.2
+                   -- ++ [RLE, Fixed]