Added unicows dll, based on the spec file written by Shachar Shemesh.

diff --git a/configure.ac b/configure.ac
index b3475df..5568db9 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1578,6 +1578,7 @@
 dlls/tapi32/Makefile
 dlls/ttydrv/Makefile
 dlls/twain/Makefile
+dlls/unicows/Makefile
 dlls/url/Makefile
 dlls/urlmon/Makefile
 dlls/urlmon/tests/Makefile