Make _TARGETNAME variable global so it could be used by scripts sourcing it.
Change-Id: Iaf1c3b53875734658b1b8f136c9bb958988b56bf
Signed-off-by: Freddie Chopin <freddie.chopin@gmail.com>
Reviewed-on: http://openocd.zylin.com/421
Tested-by: jenkins
Reviewed-by: Chris Morgan <chmorgan@gmail.com>
Reviewed-by: Øyvind Harboe <oyvindharboe@gmail.com>