2010-09-10  Robert Dewar  <dewar@adacore.com>

	* errout.adb: Remove tests of Parsing_Main_Subunit, since this test is
	now done in In_Extended_Main_Source_Unit.
	* errout.ads (Compiler_State[_Type]): Moved from Errout to Lib
	(Parsing_Main_Subunit): Moved from Errout to Lib and renamed
	as Parsing_Main_Extended_Source.
	* frontend.adb: Set Parsing_Main_Extended_Source True for parsing main
	unit.
	* lib-load.adb (Load_Unit): Add PMES parameter
	Set PMES appropriately in all calls to Load_Unit
	* lib-load.ads (Load_Unit): Add PMES parameter
	* lib.adb (In_Extended_Main_Source_Unit): When called with
	Compiler_State set to Parsing, test new flag
	Compiling_Main_Extended_Source.
	* lib.ads (Compiler_State[_Type]): Moved from Errout to Lib
	(Parsing_Main_Subunit): Moved from Errout to Lib and renamed
	as Parsing_Main_Extended_Source
	* par-load.adb (Load): Set PMES properly in call to Load_Unit

2010-09-10  Ed Schonberg  <schonberg@adacore.com>

	* exp_cg.adb: Use proper entity to handle overloads.
	* sem_res.adb (Check_Parameterless_Call): An operator node without
	actuals cannot be a call, and must be treated as a string.

From-SVN: r164182