face: Adding new constructors that accept reference to io_service object

Constructors that accept shared_ptr<io_service> are marked deprecated
and will be removed at some point in the future.

Change-Id: I65d5aff79b82a2977fab502e4aab67327a658433
diff --git a/docs/doxygen.conf b/docs/doxygen.conf
index 84c547d..eae80ec 100644
--- a/docs/doxygen.conf
+++ b/docs/doxygen.conf
@@ -590,7 +590,7 @@
 # the documentation.
 # The default value is: YES.
 
-GENERATE_DEPRECATEDLIST= NO
+GENERATE_DEPRECATEDLIST= YES
 
 # The ENABLED_SECTIONS tag can be used to enable conditional documentation
 # sections, marked by \if <section_label> ... \endif and \cond <section_label>