Now that muser-mode is default the multilib definitions does not require to specify that switch any more.

Now that muser-mode is default the multilib definitions does not require to
specify that switch any more. Add UT699 to multilib after recent patches. Add
AT697F multilib since there are many LEON2 users running RTEMS. Add leon to
multilib too.

gcc/
	* config/sparc/t-rtems: Remove -muser-mode. Add ut699, at697f and leon.

From-SVN: r228204