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.

	modified:   mongoose.c

In few windows machines, the environment variables "ProgramFiles" is required to successfully execute PHP code especially socket functions.

when having connections with and without auth would cause double free and then crash