exp_ch6.adb (Expand_Call): Add guard to ensure that both the parent and the derived type are of the same kind.

2008-05-20  Hristian Kirtchev  <kirtchev@adacore.com>

	* exp_ch6.adb (Expand_Call): Add guard to ensure that both the parent
	and the derived type are of the same kind.
	(Expand_Call): Generate type conversions for actuals of
	record or array types when the parent and the derived types differ in
	size and/or packed status.

From-SVN: r135624