* a-extiti.ads (Timer): The discriminant is a "not null access
	constant" in the Reference Manual.
	(Cancel_Handler): Cancelled is an out parameter in the Reference Manual.

	* a-swuwha.adb: Remove junk RM header

	* g-bytswa-x86.adb (Swap2, Swap4, Swap8): Remove explicit "in" mode
	indicator

	* g-bytswa.ads: Minor reformatting

	* g-soccon-solaris-64.ads, g-soccon-hpux-ia64.ads: 
	Add new constant Thread_Blocking_IO, always True by default, set False
	on a per-runtime basis.
	(Need_Netdb_Buffer): New constant.

	* s-dsaser.ads (Get_Local_Partition_Id, Get_Passive_Partition_Id):
	Added renames for corresponding functions in System.Partition_Interface.

	* Makefile.in: Remove VMS specific System.CRTL packages which are no
	longer needed.

	* s-crtl-vms64.ads: Removed.

From-SVN: r128430