We probably should use isfinite() on more platforms, at least other
BSD-based ones, instead of the allegedly deprecated finite()?

VclStringResourceLoader eg.
    test = smgr.createInstance("com.sun.star.resource.VclStringResourceLoader")
    invocation = test.setValue("FileName", "test")

It seems we can't cope with XInvocation implementors, so give a nice
exception instead

There is no code using it anymore in the tree.

Leads to build failures on NetBSD-5.99.51 and is not needed.