mongoose.c:4680:23: error: ‘ERR_get_error’ was not declared in this scope
mongoose.c:4681:52: error: ‘ERR_error_string’ was not declared in this scope

Added check for document_root != NULL in convert_uri_to_file_name(). Added #define rmdir _rmdir for win32

support serving pre-gzipped files transparently provided the user agent accepts gzip content-encoding. The feature breaks if the user agent makes a range request within a gzipped file, and returns 501 in this case

Needs to be a valid TCP port number, and not less than 1 or greater than 65535

For SSL in close_connection, current implementation use close_socket_gracefully to close socket firstly, then SSL_free. In my
testing, this approach may cause some pending write data missing. I'd suggest use standard SSL_shutdown in SSL conection. It
need call twice according to openSSL manual - one call sends the close_notify alert and one call receives the response from
the peer

Lua functionality change: print renamed to mg.write, read renamed to mg.read. Expanded user manual, fixed example pages.