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>
Fix crash in QProcess::waitForStarted() on Unix.

Invoking waitForStarted() on a QProcess before or after an unsuccessful
call to start() (e.g., with an empty command), would execute FD_SET with
an invalid file descriptor and cause the process to abort.
The bug can be reliably reproduced on OSX.

(cherry-picked from qtbase commit c8d9b17367cfdcb034d11f8a168ca4ae3993e7c3)
Task-number: QTBUG-32958
Change-Id: Id25b7781168489281645e21571361ca1a71d43e3
Reviewed-by: Christian Stromme <christian.stromme@digia.com>