[pygobject] Add consistent GLib.MainLoop SIGINT cleanup

[Simon Feltman <sfeltman src gnome org>]

commit 57195c9c864bc25521bb3cb98286e6d6f0645652
Author: Simon Feltman <sfeltman src gnome org>
Date:   Sun Oct 27 16:02:13 2013 -0700

    Add consistent GLib.MainLoop SIGINT cleanup
    
    Remove auto cleanup of SIGINT source handling by returning True from the
    signal callback. This gives the __del__ method consistent cleanup semantics
    regardless of whether or not a SIGINT occurred.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=710978

 gi/overrides/GLib.py |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/gi/overrides/GLib.py b/gi/overrides/GLib.py
index 8f18682..fc25882 100644
--- a/gi/overrides/GLib.py
+++ b/gi/overrides/GLib.py
@@ -507,6 +507,10 @@ class MainLoop(GLib.MainLoop):
         def _handler(loop):
             loop.quit()
             loop._quit_by_sigint = True
+            # We handle signal deletion in __del__, return True so GLib
+            # doesn't do the deletion for us.
+            return True
+
         if sys.platform != 'win32':
             # compatibility shim, keep around until we depend on glib 2.36
             if hasattr(GLib, 'unix_signal_add'):