Did some cleanup as proposed by the main developers.
- Bigger HTTP Header Buffer
- Exception if Header is anyway exceeded.
- Linebreaks on HTTP Request fixed to standard.
- Only stop header reading on \r\n\r\n and no longer on \n\n\n\n
- Simplyfied the code to stop if buffer could not be filled.
- Handle special case if buffer has length 0, like specified in the Java API
- Socket will no longer fill the buffer completely
