[2/5] windowscodecs: Basic tests for tiff encoder options

[Vincent Povirk]

+    { wszTiffCompressionMethod, VT_UI1,         VT_UI1,
{.iVal=WICTiffCompressionDontCare} },

This .field=value initialization syntax is not acceptable for Wine
(not in C89). I don't know another way to initialize unions.

+    if (clsid_encoder == &CLSID_WICTiffEncoder)
+        todo_wine test_specific_encoder_properties(options,
testdata_tiff_props, all_props, cProperties2);

It might be better to mark the individual properties with a todo, so
they can be added one at a time.