i3 - improved tiling WM

Use ev_loop_fork after fork, this fix forking on kqueue based OSes

Patch status: merged

Patch by Baptiste Daroussin

To apply this patch, use:
curl http://cr.i3wm.org/patch/103/raw.patch | git am

b/i3lock.c

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@@ -478,6 +478,8 @@ static void xcb_check_cb(EV_P_ ev_check *w, int revents) {
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                     /* In the parent process, we exit */
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                     if (fork() != 0)
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                         exit(0);
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+
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+                    ev_loop_fork(EV_DEFAULT);
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                 }
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                 break;
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