Hi

This patch is to fix bug #4932 and other bugs of disassembly window. 
rowPrepend is added to prepend rows by calculating memory information
like rowAppend. Because the methods that are provided by class
Disassembler, disassembleInstructions and
disassembleInstructionsStartEnd, can only read the instructions that are
following some address, rowPrepend have to use two while execution
control to read the instructions that are preceding some address.
Any suggestions are welcomed.

--ChangeLog--
2007-08-17  Zhao Shujing <pearly.zhao@oracle.com>

    *disassembler/DisassemblyWindow.java: fix bug #4932
	(fromBox.entryEvent): Use fromSpin.setValue to invoke fromSpin
entryEvent.
	(toBox.entryEvent): Ditto.
	(refreshList): Change to get next instruction after finishing model
setValue.
	(rowPrepend): Added.
	(handleFromSpin): Prepend rows provided by rowPrepend and remove
redundant instructions according to the change of memory address.


Cheers
Pearly