Update src/main/java/it/dontesta/liferay/portlet/ViewAUIAutocompleteAjax.java

for liferay 6.1, the "Role" class implementation has moved. Need the PortalClassLoaderUtil to get the new implementation 
Merge pull request #1 from syedfaruckh/patch-1

Update src/main/java/it/dontesta/liferay/portlet/ViewAUIAutocompleteAjax...