exp_ch4.adb (Expand_Concatenate): Remove wrapping in expression-with-actions node.

exp_ch4.adb (Expand_Concatenate): Remove wrapping in expression-with-actions node.

2013-04-11  Robert Dewar  <dewar@adacore.com>

	* exp_ch4.adb (Expand_Concatenate): Remove wrapping in
	expression-with-actions node. No longer needed given fix to
	sem_prag and caused loss of some useful warnings.
	* sem.ads: Minor reformatting.
	* sem_prag.adb (Check_Disabled): Removed, to be replaced by not
	Check_Enabled. These two routines were curiously incompatible
	causing confusion.
	(Analyze_Pragma, case Check): Make sure we do
	not expand the string argument if the check is disabled. Avoid
	use of Check_Disabled, which resulted in missing analysis in
	some cases.
	* sem_prag.ads (Check_Disabled): Removed, to be replaced by not
	Check_Enabled. These two routines were curiously incompatible
	causing confusion.

From-SVN: r197761