Refactor on spinner

git-svn-id: http://primefaces.googlecode.com/svn/primefaces/trunk@8852 5a70e874-a5cb-11dd-8af2-493fb0bb9f7c
#5398

git-svn-id: http://primefaces.googlecode.com/svn/primefaces/trunk@8854 5a70e874-a5cb-11dd-8af2-493fb0bb9f7c