syncrepl and aliases

[Howard Chu <hyc@symas.com>]

I'm still working on rewriting the syncprovider as an overlay. 
Separating the code out of back-bdb/search.c is proving to be difficult. 
Just as a matter of principle, should the search scope for a syncrepl 
search dereference aliases? I would guess that a consumer trying to 
replicate a particular subtree doesn't care about entries outside of 
that subtree. So entries that only enter the scope by virtue of a deref 
shouldn't really be considered. If that's the case, evaluating which 
entries to return can be simplified a fair amount.

--
 -- Howard Chu
 Chief Architect, Symas Corp.       Director, Highland Sun
 http://www.symas.com               http://highlandsun.com/hyc
 Symas: Premier OpenSource Development and Support