Add basic MI test for the VLA support.

2013-10-02  Keven Boell  <keven.boell@intel.com>

gdb/testsuite/gdb.mi/

	* mi-vla-basics.exp: New file
	* vla.c: New file

Change-Id: Ice4a3c228ee81b03951afe648eb11d1e838868c9
Signed-off-by: Keven Boell <keven.boell@intel.com>