Hristian Kirtchev  <kirtchev@adacore.com>

	* exp_ch3.adb
	(Expand_N_Object_Declaration): Correct the condition which triggers the
	generation of a call to Displace when initializing a class-wide object.
	(Build_Dcheck_Functions): Build discriminant-checking for null variants
	when Frontend_Layout_On_Target is true to ensure that they're available
	for calling when a record variant size function is built in Layout.

From-SVN: r135621