The following fixes a problem with -var-assign whereby an assignment
of a new value is not seen by a subsequent -var-update.  The
underlying varobj_update call looks to see if there is a difference
between the current value and a refreshed value.  Since varobj_set_value
actually changes both the internal value and the actual value, varobj_update
does not add the variable to the changelist.

The fix involves adding a new flag: "updated" to the struct varobj which
is set by varobj_set_value when the value changes and is checked by varobj_update
before comparing current and refreshed values for a varobj.

ChangeLog:

2002-10-03  Jeff Johnston  <jjohnstn@redhat.com>

	* varobj.c (struct varobj): Add new "updated" flag.
	(new_variable): Default "updated" flag to 0.
	(varobj_set_value): Set "updated" flag to 1 if value
	changes.
	(varobj_update): Check varobj "updated" flag before
	comparing old and refreshed values.  Fix for
	PR gdb/702.

Approved?

-- Jeff J.