Improve Windows deploy VBScript.

This morning I published a post into [forum.fusioninventory.org](http://forum.fusioninventory.org/viewtopic.php?pid=12484#p12484 "http://forum.fusioninventory.org/viewtopic.php?pid=12484#p12484") that resolves the problem of deploy the new FusionInventory Agent 2.3.0 with the new FusionInventory Agent installer for Microsoft Windows while maintaining compatibility with the previous FusionInventory Agent installer.

This is the patch file. I have tested it but would be well do more testing before applying it.