ripple/rippled — pull request #595 by HowardHinnant (2014-09-30 17:50:00+00:00)
Title: Miscellaneous cleanups in protocol:

* Give KnownFormats deleted copy members so that derived
classes will give the right answers if queried with the
std::is_copy_constructible/assignable traits.

* Replace SharedSingleton with a local static in
LedgerFormats::getInstance() to be consistent with
similar code in other places. This also allows the
LedgerFormats default constructor to be marked private
so that the compiler enforces the design that
LedgerFormats is a singleton type.

* Change RippleAddress to inherit privately from
CBase58Data instead of publicly. This lets the compiler
enforce that there are no unintended conversions from
RippleAddress to CBase58Data. This change allows us
to remove a comment warning about unwanted conversions.

@miguelportilla, @nbougalis