fix some snprintf warnings webdav

add function for registering webdav backends webdav

add instance field to webdav backend struct webdav

add empty pg webdav funcs webdav

fix error handling in pg_remove_res webdav

handle sql error in pg_remove_res webdav

implement pg rmdir webdav

(0) -300 -100 -30 -10 -7 +7 +10 +30 +100 tip

mercurial