now that there are no modules that define their own version of

'struct localuser' (see issue #6216), redefine STANDARD_LOCAL_USER 
to empty, and define the localuser structure in module.h (issue #6494)


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@10223 65c4cc65-6c06-0410-ace0-fbb531ad65f3