nfqws,tpws: always use line buffering for console IO

Forces stdout and stderr to always use line buffering. Note that glibc
does automatically flush on newline iff connected to a terminal, but
that is not the case when running under systemd. See also
https://www.gnu.org/software/libc/manual/html_node/Buffering-Concepts.html
https://www.gnu.org/software/libc/manual/html_node/Controlling-Buffering.html

nfq/helpers.h

@@ -92,6 +92,7 @@ void fill_random_bytes(uint8_t *p,size_t sz);
 void fill_random_az(uint8_t *p,size_t sz);
 void fill_random_az09(uint8_t *p,size_t sz);
 
+void disable_console_io_buffering(void);
 bool set_env_exedir(const char *argv0);