Added WSF_STRING.is_empty
Improved HTML_ENCODER to be able to decode a STRING_8 or STRING_32 using general_decoded_string (s)
Improved tutorial example
Added precompilation for WSF library
Cosmetic (removed unused locals)
Added WSF_DEFAULT_RESPONSE_SERVICE
Added simple WSF_SERVICE_LAUNCHER_OPTIONS_FROM_INI class to load launch option from ini file.
Removed a few obsolete features