New mime support



ftp send should return server replies?
make sure there are no object files in the distribution tarball
http handling of 100-continue, see DB patch
DB ftp.lua bug.
test unix.c to return just a function and works with require"unix"
get rid of setmetatable(, nil) since packages don't need this anymore in 5.1
compat-5.1 novo
ajeitar pra lua-5.1

adicionar exemplos de expans�o: pipe, local, named pipe
testar os options!


- Thread-unsafe functions to protect
    gethostbyname(), gethostbyaddr(), gethostent(),
inet_ntoa(), strerror(),