2013-04-11  Ed Schonberg  <schonberg@adacore.com>

	* sem_util.ads, sem_util.adb (Get_Incomplete_View_Of_Ancestor):
	New function to implement the notion introduced in RM 7.3.1
	(5.2/3): in a child unit, a derived type is within the derivation
	class of an ancestor declared in a parent unit, even if there
	is an intermediate derivation that does not see the full view
	of that ancestor.
	* sem_res.adb (Valid_Conversion): if all else fails, examine if an
	incomplete view of an ancestor makes a numeric conversion legal.

2013-04-11  Ed Schonberg  <schonberg@adacore.com>

	* sem_ch6.adb: in Ada2012 operators can only have in
	parameters.

2013-04-11  Vincent Celier  <celier@adacore.com>

	* makeutl.adb (Create_Binder_Mapping_File): Do not put into
	the mapping file ALI files of sources that have been replaced.

2013-04-11  Vincent Celier  <celier@adacore.com>

	* projects.texi: Add subsection Duplicate Sources in Projects.

2013-04-11  Vincent Celier  <celier@adacore.com>

	* gnat_ugn.texi: Add documentation for gnatmake switch -droot_dir/**

2013-04-11  Arnaud Charlet  <charlet@adacore.com>

	* init.c (__gnat_install_handler): Only set up an alternate
	stack when installing a signal handler for SIGSEGV.

2013-04-11  Thomas Quinot  <quinot@adacore.com>

	* g-socket.adb (Connect_Socket, timeout version): Call
	underlying connect operation directly, not through the 2-argument
	Connect_Socket thick binding, in order to avoid raising a junk
	exception for the EINPROGRESS return.

From-SVN: r197775