libfetch 2.33

BSD License

http://cvsweb.netbsd.org/bsdweb.cgi/pkgsrc/net/libfetch/

slightly adapted:
- added parts of nbcompat locally and changed includes
- include <strings.h> for strcasecmp
- added casts around malloc and friends
- fixed ftp.c and funny IPV6 address cast
- _REENTRANT defined the hard way for Interix/Win32
- new to new_ (clashes with C++ keyword)