Moved "generic" fd I/O functions from picocom.c to fdio.[ch]

fdio.h

@@ -0,0 +1,48 @@
+/* vi: set sw=4 ts=4:
+ *
+ * fdio.h
+ *
+ * Functions for doing I/O on file descriptors.
+ *
+ * by Nick Patavalis (npat@efault.net)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+ * USA 
+ */
+
+#ifndef FDIO_H
+
+ssize_t writen_ni(int fd, const void *buff, size_t n);
+
+int fd_printf (int fd, const char *format, ...);
+
+#ifndef LINENOISE
+
+int fd_readline (int fdi, int fdo, char *b, int bsz);
+
+#endif
+
+#endif /* of FDIO_H */
+
+/**********************************************************************/
+
+/*
+ * Local Variables:
+ * mode:c
+ * tab-width: 4
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ */