asprintf, atof, atoll, gmtime_r, lldiv, rewind, strdup, strndup,
strnlen, strtof, strcasecmp

Mostly thanks to Rémi Denis-Courmont.
Some code was inspired from older VLC core code and sometimes trivial.
The old code was done by:
 - Laurent Aimar
 - Samuel Hocevar
 - Derk-Jan Hartman
 - Gildas Bazin