title: GLib API to convert hexadecimal string to ASCII string?
body: <p>I cannot believe there is no API to do this in GLib, for now I have only found people doing their own conversion, like <a href="https://stackoverflow.com/questions/3381614/c-convert-string-to-hexadecimal-and-vice-versa">here</a> and <a href="http://linuxfirmwarekit.googlecode.com/svn/trunk/plugins.c" rel="nofollow noreferrer">here (function named "decode")</a>. I would really like to find a way to do this in a simple GLib call, but if there is no way, the above methods don't work for me because the former is C++ (I'm using C/GObject) and the latter doesn't seem to work perfectly (I'm having problems with the length of the result).</p>
  
  <p>TIA</p>