vgroup_id	IN:	Vgroup identifier returned by Vattach
	attr_name	IN:	Name of the attribute

	Purpose	Returns the index of a vgroup attribute given its name.
	Return value	Returns the index of an attribute if successful and FAIL (or -1) otherwise.
	Description	Vfindattr searches the vgroup identified by the parameter vgroup_id for the attribute with the name specified by the parameter attr_name, and returns the index of that attribute.
		If more than one attribute has the same name, Vfindattr will return the index of the first one.

	FORTRAN	integer function vffdatt(vgroup_id, attr_name)
		integer vgroup_id
		character*(*) attr_name