Sun CC: Fix QtNetwork compilation

Change QT_SOCKLEN_T from int to socklen_t

Change-Id: I3f93230f36c9af1a709e3ff301a63d18e1e02b4e
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Sergio Ahumada <sergio.ahumada@digia.com>