inline.adb, inline.ads (Call_Can_Be_Inlined_In_GNATprove_Mode): New function to detect when a call may be inlined or not in GNATprove mode.

2017-01-13  Yannick Moy  <moy@adacore.com>

	* inline.adb, inline.ads (Call_Can_Be_Inlined_In_GNATprove_Mode):
	New function to detect when a call may be inlined or not in
	GNATprove mode.
	(Expand_Inlined_Call): Ensure that a temporary
	is always created in the cases where a type conversion may be
	needed on an input parameter in GNATprove mode, so that GNATprove
	sees the check to perform.
	* sem_res.adb (Resolve_Call): In GNATprove mode, skip inlining
	when not applicable due to actual requiring type conversion
	with possible check but no temporary value can be copied for
	GNATprove to see the check.

From-SVN: r244408