The streamy list of children is a good idea, but the simple fact is that ALL of subversion thinks it can load a set of children into memory. To truly solve this problem requires a huge, concerted effort. Short of that, this small effort on the editor interface is reduced to a wart rather than a shining example of a new future. (sigh) ... remove it.
* subversion/libsvn_subr/debug.c, subversion/tests/cmdline/entries_tests.py, subversion/include/svn_editor.h, subversion/include/private/svn_debug.h, subversion/libsvn_ra_serf/auth_kerb.c, subversion/libsvn_ra_serf/auth_kerb.h, subversion/libsvn_delta/editor.c: Set the eol-style to native.