2007-07-13 Miguel de Icaza <miguel@novell.com>

2007-07-13  Miguel de Icaza  <miguel@novell.com>

	* iterators.cs (Yield.CheckContext): Check for the iterator type
	also here as we can call into Yield even in codepaths that are not
	directly checked by
	(MethodOrOperator is the only path that was checked).

	In addition to the standard check, use a more specific check for
	constructors to report a more verbose error.

svn path=/trunk/mcs/; revision=81925