einfo.ads (Is_Inlined): Document new use in GNATprove mode.

einfo.ads (Is_Inlined): Document new use in GNATprove mode.

2014-07-30  Yannick Moy  <moy@adacore.com>

	* einfo.ads (Is_Inlined): Document new use in GNATprove mode.
	* inline.adb (Can_Be_Inlined_In_GNATprove_Mode): Add comments
	to explain rationale for inlining or not in GNATprove mode.
	(Expand_Inlined_Call): In GNATprove mode, set Is_Inlined flag
	to False when inlining is not possible.
	* sem_ch6.adb (Analyze_Subprogram_Body_Helper): Set Is_Inlined
	flag to indicate that subprogram is fully inlined. To be reversed
	if inlining problem is found.
	* sem_res.adb (Resolve_Call): Set Is_Inlined flag to False when
	call in potentially unevaluated context.

From-SVN: r213255