2015-11-12  Ed Schonberg  <schonberg@adacore.com>

	* sem_ch8.adb (Find_Selected_Component): In a synchronized
	body, a reference to an operation of an object of the same
	synchronized type was always interpreted as a reference to the
	current instance. This is not always the case, as the prefix of
	the reference may designate an object of the same type declared
	in the enclosing context prior to the body.

2015-11-12  Arnaud Charlet  <charlet@adacore.com>

	* impunit.ads, impunit.adb (Get_Kind_Of_File): New. Cleaned up
	implementation from previous Get_Kind_Of_Unit.
	(Get_Kind_Of_Unit): Reimplemented using Get_Kind_Of_File.
	* debug.adb: Remove d.4 switch, no longer used.
	* opt.ads: Update doc on Debugger_Level.
	* gnat1drv.adb: Code clean ups.
	* sinput.ads: minor fix in comment

2015-11-12  Bob Duff  <duff@adacore.com>

	* sinfo.adb, sinfo.ads, sem_ch6.adb, atree.ads: Add
	Was_Expression_Function flag, which is set in sem_ch6.adb when
	converting an Expression_Function into a Subprogram_Body.

2015-11-12  Pascal Obry  <obry@adacore.com>

	* usage.adb: Update overflow checking documentation.

From-SVN: r230243