tornelib-php-netcurl

* Primary commit for NETCURL-287.
* Created a GenericParser class for generic parsing of data, when many wrappers use same functions.
* WrapperConfig uses same stream-storage for streams that it does for the soapclient.
* WrapperConfig now support XML encoding via IO-Content (NETCURL-288).
* setStreamContext sets both http and https data for some wrappers (setDualStreamHttp).
* WrapperConfig now supports normal non-soap-basic auth.
* As curl is the first option with a fallback to streams (file_get_contents) wrapper is no longer throwing on absence.
* Changed error message for instantion exceptions (and fixed typo).
* Tiny cleanup.