add jaraco to test sym links on Windows. Fixes #894

libs/jaraco/windows/lib.py

@@ -0,0 +1,20 @@
+import ctypes
+
+from .api import library
+
+def find_lib(lib):
+	r"""
+	Find the DLL for a given library.
+
+	Accepts a string or loaded module
+
+	>>> print(find_lib('kernel32').lower())
+	c:\windows\system32\kernel32.dll
+	"""
+	if isinstance(lib, str):
+		lib = getattr(ctypes.windll, lib)
+
+	size = 1024
+	result = ctypes.create_unicode_buffer(size)
+	library.GetModuleFileName(lib._handle, result, size)
+	return result.value