1. busybox-telnet dosn't inform server about the size of terminal screen.
In the world of xterminals and frame buffers it's rather horrible
to use fixed 80x24 region in upper-left corner of screen/window.
2. If client sends character 0x0d to the server then sends character 0x0a
the server eat the second byte (0x0a) - it's described in telnet RFC.
Client should send two bytes ( 0x0d + 0x0a or 0x0d + 0x00 ) insted of
one 0x0d byte.
3. busybox telnet implementation wasn't 8bit clean (look at 0xff byte).
I need it because I have to use binray transfer like rz/sz. So when
I resloved the problem (2) I corrected this one two.
This also contains a small cleanup patch from vodz, and some minor editing
by me.
-- reverse resolve network name and cache in route and ifconfig
applets, fix print nslookup server name if compile without
uClibc, fix route crashe 'route add', fix warnings compile
networking and pwd_grp applets
* cp/mv now accepts (and ignores) the -f flag, since it always
does force anyway
* tail can now accept -<num> commands (e.g. -10) for better
compatibility with the standard tail command
* added a simple id implementation; doesn't support supp. groups yet
