Minor tweaks. Some additional commentary.
Minor tweaks. Some additional commentary.

* (SVN_RO_DAV_PROP, SVN_RW_DAV_PROP): [new] macros to ease construction of
    dav_liveprop_spec initialization structures.
* (dav_svn_insert_prop): add (empty) cases for DAV:getcontentlanguage,
    DAV:getcontenttype, and DAV:target.


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@838119 13f79535-47bb-0310-9956-ffa450edef68

wbond/subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,wbond/subversion,wbond/subversion,YueLinHo/Subversion,wbond/subversion,wbond/subversion,wbond/subversion,YueLinHo/Subversion,YueLinHo/Subversion,wbond/subversion,YueLinHo/Subversion