Backport security fix r16747 from trunk
1. Disable fleshing for PCRUD. Otherwise fleshing would provide a
back door whereby a user could see stuff he has no permission to see.
2. For the id_list method: strip out the "flesh_fields" entry, not
the "flesh_columns" entry (which doesn't exist). This actually makes
no difference, but if we're going to do something useless, we might
as well do it right.
git-svn-id: svn://svn.open-ils.org/ILS/branches/rel_1_6_0@16749
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