Modify mkspecs/unsupported/macx-clang/qplatformdefs.h

Now mkspecs/unsupported/macx-clang/qplatformdefs.h includes
mkspecs/common/mac/qplatformdefs.h.
This patch fixes that Qt built with clang failes to load cocoa platform
plugin without QT_QPA_PLATFORM environment variable.

Change-Id: Id48268eaf7ba24403f91497539ef0dab6f22a9dc
Reviewed-on: http://codereview.qt-project.org/4564
Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Morten Johan Sørvig <morten.sorvig@nokia.com>

mkspecs/unsupported/macx-clang/qplatformdefs.h

@@ -39,59 +39,5 @@
 **
 ****************************************************************************/
 
-#ifndef QPLATFORMDEFS_H
-#define QPLATFORMDEFS_H
+#include "../../common/mac/qplatformdefs.h"
 
-// Get Qt defines/settings
-
-#include "qglobal.h"
-
-// Set any POSIX/XOPEN defines at the top of this file to turn on specific APIs
-
-#include <unistd.h>
-
-
-// We are hot - unistd.h should have turned on the specific APIs we requested
-
-
-#include <pthread.h>
-#include <dirent.h>
-#include <fcntl.h>
-#include <grp.h>
-#include <pwd.h>
-#include <signal.h>
-#define QT_NO_LIBRARY_UNLOAD
-
-#include <sys/types.h>
-#include <sys/ioctl.h>
-#include <sys/ipc.h>
-#include <sys/time.h>
-#include <sys/shm.h>
-#include <sys/socket.h>
-#include <sys/stat.h>
-#include <sys/wait.h>
-#include <netinet/in.h>
-#ifndef QT_NO_IPV6IFNAME
-#include <net/if.h>
-#endif
-
-#include "../../common/posix/qplatformdefs.h"
-
-#undef QT_OPEN_LARGEFILE
-#undef QT_SOCKLEN_T
-#undef QT_SIGNAL_IGNORE
-
-#define QT_OPEN_LARGEFILE       0
-
-#if (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4)
-#define QT_SOCKLEN_T            socklen_t
-#else
-#define QT_SOCKLEN_T            int
-#endif
-
-#define QT_SIGNAL_IGNORE        (void (*)(int))1
-
-#define QT_SNPRINTF		::snprintf
-#define QT_VSNPRINTF		::vsnprintf
-
-#endif // QPLATFORMDEFS_H