Change:	41001
Change:	41001

User:	jgrandy

Description:
	Summary:Optimize LzView.updateSize
	
	Technical Reviewer: ptw (pending)
	QA Reviewer: mdavis (pending)
	Doc Reviewer:
	
	Details:Reduce string concat overhead and only send events if they are 
	non-null. Profiler tells me these changes reduce overhead of 
	LzView.updateSize by about 40%.
	
	Tests:smokecheck.lzx

git-svn-id: d62bde4b5aa582fdf07c8d403e53e0399a7ed285@251 fa20e4f9-1d0a-0410-b5f3-dc9c16b8b17c

mcarlson/openlaszlo,mcarlson/openlaszlo,mcarlson/openlaszlo,mcarlson/openlaszlo,mcarlson/openlaszlo,mcarlson/openlaszlo,mcarlson/openlaszlo