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* this upgrade is important mostly for edbus2
* edbus2 is using AC_TRY_RUN in edbus/m4/ac_valist.m4, it does not
  work for us cross-compiling
* without this change eve/enjoy segfaults:
  http://sourceforge.net/mailarchive/message.php?msg_id=30297875

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>