vlib: use new filename format

vlib/term/term_nix.c.v

@@ -0,0 +1,27 @@
+module term
+
+import os
+
+#include <sys/ioctl.h>
+
+#include <termios.h> // TIOCGWINSZ
+
+pub struct C.winsize {
+pub:
+	ws_row    u16
+	ws_col    u16
+	ws_xpixel u16
+	ws_ypixel u16
+}
+
+fn C.ioctl(fd int, request u64, arg voidptr) int
+
+// get_terminal_size returns a number of colums and rows of terminal window.
+pub fn get_terminal_size() (int,int) {
+	if is_atty(1) <= 0 || os.getenv('TERM') == 'dumb' {
+		return default_columns_size, default_rows_size
+	}
+	w := C.winsize{}
+	C.ioctl(1, C.TIOCGWINSZ, &w)
+	return int(w.ws_col),int(w.ws_row)
+}