2014-07-30  Robert Dewar  <dewar@adacore.com>

	* clean.adb: Minor reformatting.
	* opt.ads: Minor fix to incorrect comment.

2014-07-30  Ed Schonberg  <schonberg@adacore.com>

	* a-chtgbo.ads, a-chtgbo.adb (Delete_Node_At_Index): New
	subprogram, used by bounded hashed sets, to delete a node at
	a given index, whose element may have been improperly updated
	through a Reference_Preserving key.
	* a-cbhase.ads: Add Reference_Control_Type to package Generic_Keys.
	* a-cbhase.adb: Add Adjust and Finalize routines for
	Reference_Control_Type.
	(Delete, Insert): Raise Program_Error, not Constraint_Error,
	when operation is illegal.
	(Reference_Preserving_Key): Build aggregate for Reference_Control_Type
	* a-cmbutr.ads: Add Reference_Control_Type to detect tampering. Add
	private with_clause for Ada.Finalization.
	* a-cbmutr.adb: Add Adjust and Finalize routines for
	Reference_Control_Type. Use it in the construction of Reference
	and Constant_Reference values.

From-SVN: r213285