Set crash handler to built in invisible handler, as some third-party plugins are poorly written and crash often

git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdebase@1108062 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

nsplugins/pluginscan.cpp

@@ -358,6 +358,7 @@ void scanDirectory( QString dir, QStringList &mimeInfoList,
         } else if (loader_pid == 0) {
            // inside the child
            close(pipes[0]);
+           KCrash::setCrashHandler(segv_handler);
            _exit(tryCheck(pipes[1], absFile));
         } else {
            close(pipes[1]);