Add original unix v6

source/iolib/puts.c

@@ -0,0 +1,13 @@
+puts(str)
+char *str;
+{
+auto char *p,c;
+auto int f;
+extern int cout;
+if (nargs() != 1)
+   IEHzap("puts  ");
+p = str;
+while( (c = *p++)!= '\0') cputc(c,cout);
+cputc('\n',cout);
+return(str);
+}