kdecore: process all events while waiting for job to finish in KJob::exec()

fixes hang in case the job progress is not hidden and UI events have to be processed

Signed-off-by: Ivailo Monev <xakepa10@gmail.com>

kdecore/jobs/kjob.cpp

@@ -196,7 +196,7 @@ bool KJob::exec()
 
     start();
     while( !d->isFinished ) {
-        QCoreApplication::processEvents(QEventLoop::ExcludeUserInputEvents);
+        QCoreApplication::processEvents();
     }
     return ( d->error == NoError );
 }

kdecore/jobs/kjob.h

@@ -243,12 +243,6 @@ public:
      * You should avoid calling exec() whenever you can and use the asynchronous interface of KJob
      * instead.
      *
-     * Note that user input events will not be processed while the job is being executed, which
-     * means your user interface will effectivly be blocked. Other events like paint or network
-     * events are still being processed. The advantage of not processing user input events is that
-     * the chance of accidental reentrancy is greatly reduced. Still you should avoid calling this
-     * function.
-     *
      * Another thing to note is that the result of the job will be emited after the execution
      * finishes.
      *