2007-08-14  Thomas Quinot  <quinot@adacore.com>

	* table.adb, g-table.adb, g-dyntab.adb (Append): Reimplement in terms
	of Set_Item.
	(Set_Item): When the new item is an element of the currently allocated
	table passed by reference, save a copy on the stack if we're going
	to reallocate. Also, in Table.Set_Item, make sure we test the proper
	variable to determine whether to call Set_Last.

	* sinput-d.adb, sinput-l.adb, stringt.adb, switch-m.adb,
	symbols-vms.adb, symbols-processing-vms-alpha.adb,
	symbols-processing-vms-ia64.adb, sem_elab.adb, repinfo.adb: Replace
	some occurrences of the pattern
	   T.Increment_Last;
	   T.Table (T.Last) := Value;
	with a cleaner call to
	   T.Append (Value);

From-SVN: r127442