[Bug 709480] Use autoreconf instead custom script

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=709480
  GStreamer | common | git

--- Comment #4 from Tim-Philipp Müller <t.i.m at zen.co.uk> 2014-01-01 22:06:49 UTC ---
Yes, will do.

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