* adabkend.adb, ali-util.adb, errout.adb, exp_ch7.adb,
	* exp_dbug.adb, freeze.adb, lib-xref.adb, restrict.adb,
	* sem_attr.adb, sem_ch4.adb, sem_ch5.adb, sem_ch6.adb, sem_ch8.adb,
	* sem_prag.adb, sem_res.adb, sem_util.adb Rename SPARK_Mode into
	GNATprove_Mode.
	* sem_ch13.adb: Remove blank.
	* exp_spark.adb, exp_spark.ads (Expand_SPARK_Call): Only replace
	subprograms by alias for renamings, not for inherited primitive
	operations.
	* exp_util.adb (Expand_Subtype_From_Expr): Apply the expansion
	in GNATprove mode.
	(Remove_Side_Effects): Apply the removal in
	GNATprove mode, for the full analysis of expressions.
	* expander.adb (Expand): Call the light SPARK expansion in GNATprove
	mode.
	(Expander_Mode_Restore, Expander_Mode_Save_And_Set): Ignore
	save/restore actions for Expander_Active flag in GNATprove mode,
	similar to what is done in ASIS mode.
	* frontend.adb (Frontend): Generic bodies are instantiated in
	GNATprove mode.
	* gnat1drv.adb (Adjust_Global_Switches): Set operating
	mode to Check_Semantics in GNATprove mode, although a light
	expansion is still performed.
	(Gnat1drv): Set Back_End_Mode to
	Declarations_Only in GNATprove mode, and later on special case
	the GNATprove mode to continue analysis anyway.
	* lib-writ.adb (Write_ALI): Always generate ALI files in
	GNATprove mode.
	* opt.adb, opt.ads (Full_Expander_Active): Make it equivalent to
	Expander_Active.
	(SPARK_Mode): Renamed as GNATprove_Mode.
	* sem_aggr.adb (Aggregate_Constraint_Checks): Add checks in the
	tree in GNATprove_Mode.
	* sem_ch12.adb (Analyze_Package_Instantiation): Always instantiate
	body in GNATprove mode.
	(Need_Subprogram_Instance_Body): Always instantiate body in GNATprove
	mode.
	* sem_ch3.adb (Constrain_Index, Process_Range_Expr_In_Decl):
	Make sure side effects are removed in GNATprove mode.

From-SVN: r206805