[gnome-builder] subprocess: remove use of prctl() to set parent death signal

[Christian Hergert <chergert src gnome org>]

commit 3b8a7c3d9c2e66b97fc743ce19da9ab5238cb797
Author: Christian Hergert <chergert redhat com>
Date:   Mon Oct 31 03:21:19 2016 -0700

    subprocess: remove use of prctl() to set parent death signal
    
    This cannot be used here because we will be run from a worker thread.
    What this means (according to `man prtcl`) is that when the thread that
    executes this subprocess (fork, execve) dies, the parent death signal will
    be sent. This is not what we want as we want it only to be sent once the
    entire process dies.
    
    This can be done with prctl(), but requires that it is done from the main
    thread if we want to ensure that it works as we would expect it.

 libide/subprocess/ide-subprocess-launcher.c |    9 ---------
 1 files changed, 0 insertions(+), 9 deletions(-)
---
diff --git a/libide/subprocess/ide-subprocess-launcher.c b/libide/subprocess/ide-subprocess-launcher.c
index 2b6990b..d1c874e 100644
--- a/libide/subprocess/ide-subprocess-launcher.c
+++ b/libide/subprocess/ide-subprocess-launcher.c
@@ -23,10 +23,6 @@
 #include <string.h>
 #include <unistd.h>
 
-#ifdef __linux
-# include <sys/prctl.h>
-#endif
-
 #include "ide-debug.h"
 #include "ide-macros.h"
 
@@ -79,11 +75,6 @@ child_setup_func (gpointer data)
    */
   setsid ();
 #endif
-
-#ifdef __linux
-  /* Ensure we are killed with our parent */
-  prctl (PR_SET_PDEATHSIG, SIGKILL);
-#endif
 }
 
 static void