wscript: don't install detail/*.hpp

This commit also fixes include paths in face-impl.hpp.

refs #2266

Change-Id: I1bbca6cdb6ffaab134f52a383fe3efe36106244f
diff --git a/src/detail/face-impl.hpp b/src/detail/face-impl.hpp
index e4991ca..248aca3 100644
--- a/src/detail/face-impl.hpp
+++ b/src/detail/face-impl.hpp
@@ -31,12 +31,12 @@
 #include "../util/scheduler.hpp"
 #include "../util/config-file.hpp"
 
-#include "transport/transport.hpp"
-#include "transport/unix-transport.hpp"
-#include "transport/tcp-transport.hpp"
+#include "../transport/transport.hpp"
+#include "../transport/unix-transport.hpp"
+#include "../transport/tcp-transport.hpp"
 
-#include "management/nfd-controller.hpp"
-#include "management/nfd-command-options.hpp"
+#include "../management/nfd-controller.hpp"
+#include "../management/nfd-command-options.hpp"
 
 namespace ndn {