Mac: Fix for compilation with 4.7.4

qglobal from 4.7.4 doesn't define MAC_OS_X_VERSION_10_7

Change-Id: Ia152108b52b92b65916002df76065e4eb95dc8a0
Reviewed-by: Bill King <bill.king@nokia.com>

src/plugins/coreplugin/macfullscreen.mm

@@ -37,8 +37,9 @@
 #include <Foundation/NSNotification.h>
 
 #include <QSysInfo>
+#include <qglobal.h>
 
-#if MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_7
+#if MAC_OS_X_VERSION_MAX_ALLOWED <= MAC_OS_X_VERSION_10_6
 enum {
     NSWindowCollectionBehaviorFullScreenPrimary = (1 << 7)
 };