* include/wget/wget.h: Amend return type of wget_bar_print(), wget_bar_vprintf()
* libwget/Makefile.am: Replace fprintf in generated css_tokenizer.c
* libwget/bar.c: Replace *printf by wget_*printf,
(_bar_set_progress): Generate progress bar with memcpy/memset
* libwget/hpkp.c: Replace *printf by wget_*printf
* libwget/cookie.c: Likewise
* libwget/hpkp.c: Likewise
* libwget/hsts.c: Likewise
* libwget/http.c: Likewise
* libwget/http_parse.c: Likewise
* libwget/io.c: Likewise
* libwget/net.c: Likewise
* libwget/ocsp.c: Likewise
* libwget/pipe.c: Likewise
* libwget/ssl_gnutls.c: Likewise
* libwget/utils.c: Likewise
* libwget/xml.c: Likewise
The intention is to not pull in (large) code parts from libc when
linking statically, the performance is better and we have no
portability issues on non-POSIX platforms (e.g. Windows).
Removed wget_buffer_vprintf_append, wget_buffer_printf_append,
wget_buffer_vprintf2 and wget_buffer_printf2.
Renamed their *2 counterpart to their old names.