configured per file. Experimental, so defaults to 'never.
(auth-source-netrc-create): Use it. Still experimental code.
(with-auth-source-epa-overrides): Use `find-file-hooks' if
- `find-file-hook' is unbound (XEmacs fix).
+ `find-file-hook' is unbound (XEmacs fix). Fix backquoting bug.
2011-06-16 Teodor Zlatanov <tzz@lifelogs.com>