2015-10-23  Bob Duff  <duff@adacore.com>

	* exp_strm.adb (Build_Record_Or_Elementary_Input_Function): Use
	Underlying_Type for B_Typ, in case the Typ is a subtype of a type with
	unknown discriminants.
	* g-awk.ads: Minor style fix in comment

2015-10-23  Hristian Kirtchev  <kirtchev@adacore.com>

	* debug.adb: Document the use of debug switch -gnatd.5.
	* einfo.adb: Code reformatting.	(Is_Ghost_Entity): Moved from ghost.adb.
	* einfo.ads New synthesized attribute Is_Ghost_Enity along
	with usage in nodes and pragma Inline.
	(Is_Ghost_Entity: Moved from ghost.ads.
	* exp_ch3.adb Code reformatting.
	(Expand_Freeze_Array_Type): Capture, set and restore the Ghost mode.
	(Expand_Freeze_Class_Wide_Type): Capture, set and restore the
	Ghost mode.
	(Expand_Freeze_Enumeration_Type): Capture, set and
	restore the Ghost mode.
	(Expand_Freeze_Record_Type): Capture, set and restore the Ghost mode.
	* exp_ch6.adb (Expand_Subprogram_Contract): Do not expand the
	contract of an ignored Ghost subprogram.
	* exp_ch13.adb Add with and use clauses for Ghost.
	(Expand_N_Freeze_Entity): Capture, set and restore the Ghost mode.
	* exp_dbug.adb (Get_External_Name): Code reformatting. Add a
	special prefix for ignored Ghost entities or when requested by
	-gnatd.5 for any Ghost entity.
	* exp_dbug.ads Document the use of prefix "_ghost_" for ignored
	Ghost entities.
	* exp_prag.adb (Expand_Pragma_Check): Capture, set and restore the
	Ghost mode.
	(Expand_Pragma_Loop_Variant): Use In_Assertion_Expr
	to signal the original context.
	* ghost.adb (Check_Ghost_Overriding): Code cleanup.
	(Is_Ghost_Entity): Moved to einfo.adb.	(Is_OK_Declaration):
	Move the assertion expression check to the outer level.
	(Is_OK_Ghost_Context): An assertion expression is a valid Ghost
	context.
	* ghost.ads (Is_Ghost_Entity): Moved to einfo.ads.
	* sem_ch3.adb (Analyze_Object_Contract): A source Ghost object
	cannot be imported or exported. Mark internally generated objects
	as Ghost when applicable.
	(Make_Class_Wide_Type): Inherit the ghostness of the root tagged type.
	* sem_ch6.adb (Analyze_Subprogram_Body_Helper): Mark
	a stand alone subprogram body as Ghost when applicable.
	(Analyze_Subprogram_Declaration): Mark internally generated
	subprograms as Ghost when applicable.
	* sem_ch7.adb: Code cleanup.
	* sem_ch13.adb (Add_Invariants): Add various formal
	parameters to break dependency on global variables.
	(Build_Invariant_Procedure): Code cleanup. Capture, set and
	restore the Ghost mode.
	* sem_res.adb (Resolve_Actuals): The actual parameter of a source
	Ghost subprogram whose formal is of mode IN OUT or OUT must be
	a Ghost variable.

2015-10-23  Hristian Kirtchev  <kirtchev@adacore.com>

	* sem_ch8.adb Code cleanup.
	(Find_Expanded_Name): Replace
	the call to In_Pragmas_Depends_Or_Global with a call to
	In_Abstract_View_Pragma.
	(In_Abstract_View_Pragma): New routine.
	(In_Pragmas_Depends_Or_Global): Removed.
	* sem_prag.adb (Analyze_Part_Of): Catch a case where indicator
	Part_Of denotes the abstract view of a variable.

From-SVN: r229224