Update to 0.6.4:

2014-04-08 libmms-0.6.4 release (blutomat <blutomat@gmail.com>)
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* Fix a possible heap memory overrun in get_answer().
  Reported by Alex Chapman.

2014-04-02 libmms-0.6.3 release (blutomat <blutomat@gmail.com>)
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* Some changes for more recent automake versions
* Remove glib dependency from uri.c and thus from whole libmms, patch by Andre Przywara
  http://sourceforge.net/p/libmms/patches/11/
* Fix several issues that prevented seeking from working, patch by John Lindgren
  http://sourceforge.net/p/libmms/patches/12/
* Remove dependency on iconv
  https://sourceforge.net/p/libmms/bugs/15/
* Fix connecting to certain mms streams, patch by gstblub
  http://sourceforge.net/p/libmms/bugs/13/

(wiz)