gnat_ugn.texi: Minor spelling correction.

gnat_ugn.texi: Minor spelling correction.

2014-07-30  Robert Dewar  <dewar@adacore.com>

	* gnat_ugn.texi: Minor spelling correction.
	* makeutl.adb: Minor code reorganization.
	* exp_ch4.adb, exp_aggr.adb, exp_ch3.adb: Minor reformatting.

2014-07-30  Robert Dewar  <dewar@adacore.com>

	* einfo.ads (Has_Unchecked_Union): Document that this is used
	to check for illegal Valid_Scalars attribute references.
	* exp_attr.adb (Build_Record_VS_Func): New function
	(Expand_N_Attribute_Reference, case Valid_Scalars): Call this
	function.
	* gnat_rm.texi: Document 'Valid_Scalars cannot be applied to
	Unchecked_Union Add note on 'Valid_Scalars generating a lot
	of code.
	* sem_attr.adb (Analyze_Attribute, case Valid_Scalars): Give
	error on attempt to apply Valid_Scalars to Unchecked_Union type.

From-SVN: r213298