The default is always UTF-8.

Always write UTF-8 to the log file.

Don't define HAVE_FS_CHARSET, and make GetFSCharset() return "ACP"
instead of "UTF-8".  Ignore the configuration setting, which had no
effect anyway.

Stupid mistake from commit 7cb803ad

Move code from the "vorbis" decoder.

Improve initial seek by not reading/decoding the first frame before
checking for the seek command.

Convenient method that behave differently than Read, and that will be used by
tag scanners.

This method will return in case of error, if the whole data is read or is EOF
is reached.