-Dhttp.nonProxyHosts vm arg is repeated for each wsdl

[jpraet]

In 05e2454 support was added for nonProxyHosts, but the getWsImportArgs() where this was added is called in a for-loop for each WSDL.

When there are a lot of WSDL's to process, combined with a nonProxyHosts configuration that is quite long, this can lead to errors on Windows due to the max command line length:

Length of Windows command line is limited to 8191 characters, but current command has 8271 characters