* Added static polymorphic sink for print formatting in
print_formatted_detail::Output<T> where T can be
std::string or std::ostringstream
* By default printfmt() uses:
PrintFormatted<std::string> pf(fmt, 256);
* prune openvpn::to_string() methods prior to removal
(obsoleted by C++11 std::to_string())
(1) Create new versions of to_string() method:
(a) for numeric types, dispatch to std::to_string()
(b) for string, char, and nullptr_t types, handle directly
(c) for other types, use std::ostringstream
(2) Create vararg methods prints, print, and printd
for printing argument lists.
(3) Create method printfmt() with string formatting
similar to sprintf but fully type-safe.
usage: printfmt(<format_string>, args...)
options:
%s formats any argument regardless of type.
%r formats any argument regardless of type and quotes it.
%% formats '%'
array instead of concatenated string, and to resolve issue on OS X
where signals were being ignored after system() was called.
C++ iterators incremented in a for statement should usually use
a preincrement syntax.
