par-endh.adb (Check_End): issue a syntax error in SPARK mode for missing label at...

par-endh.adb (Check_End): issue a syntax error in SPARK mode for missing label at end of declaration...

2011-08-01  Yannick Moy  <moy@adacore.com>

	* par-endh.adb (Check_End): issue a syntax error in SPARK mode for
	missing label at end of declaration (subprogram or package)
	* par-ch4.adb (P_Name): issue a syntax error in SPARK mode for mixing
	of positional and named parameter association
	* par.adb, par-util.adb (Formal_Error_Msg_SP): new wrapper on
	Error_Msg_SP which adds a prefix to the error message giving the name
	of the formal language analyzed
	* sem_ch6.adb (Analyze_Return_Type): issue an error in formal mode for
	access result type in subprogram, unconstrained array as result type,.
	(Analyze_Subprogram_Declaration): issue an error in formal mode for null
	procedure
	* sem_ch8.adb: Code clean up.

From-SVN: r177048