CRM-15436, fixed typo
CRM-15436, because of caching of xml items, xml menu items defined by extension are not resolved during 'download and install' process, hence force computing menu items from xml during hard reset, i.e when we truncate civicrm_menu
CRM-15436, undo not a typo fix
Merge pull request #4362 from kurund/CRM-15436

CRM-15436: "Download and Install" action for extension does not create menu entries