Replaced the deprecated gethostbyname with getaddrinfo (#47)
Fixed compile error with getaddrinfo with MinGW
Fixed white pixel showing on first character of sf::Text (#414)
Don't reimplement std::copy().

Using std::copy() potentially makes available helpful checks in debug mode and
can also lead to faster code by calling memcpy() in release mode.
The <algorithm> header was already included.
Merge pull request #415 from Oberon00/utf-stl-copy

Replaced explicit assignment loops with std::copy in sf::Utf functions.
Updated links in readme.txt