tb-alvms.c (struct tb_entry_t, [...]): Revert back to use of Procedure Value instead of Frame Pointer as the...

2007-12-06  Olivier Hainque  <hainque@adacore.com>

	* tb-alvms.c (struct tb_entry_t, __gnat_backtrace): Revert back to use
	of Procedure Value instead of Frame Pointer as the invocation
	identifier associated with the instruction pointer in each traceback
	entry.

	* g-trasym-vms-alpha.adb (Traceback_Entry, PV_For, FP_For,
	TB_Entry_For): Revert back to use of Procedure Value instead of Frame
	Pointer as the invocation identifier passed to tbk$symbolize.

	* s-traent-vms.ads, s-traent-vms.adb
	(Traceback_Entry, PV_For, FP_For, TB_Entry_For): Revert back to use of
	Procedure Value instead of Frame Pointer as the invocation identifier
	passed to tbk$symbolize.

From-SVN: r130867