localdev_tools_importPackages2IS/import_IS_packages.xml: Should work on Windows and Unix

[gvlx]

https://github.com/SoftwareAG/webmethods-integration-examples/blob/1a6fba436ac02f6d8978fe2131200096d0dd22ab/localdev_tools_importPackages2IS/import_IS_packages.xml#L92

There is no reason to have a windows-only script as this example shows: https://stackoverflow.com/a/23060549