The attached patch...

a) Replaces the hand-rolled "static pointer check + guard + static object and
assign to pointer" patterns with the rtl::Static template implementation of the
same pattern. No real change, just slightly prettier I guess.
b) Replaces the global aImplementationId objects with rtl::Static equivalents in
order to give a deterministic order of construction and destruction which
ensures that uno::Sequences don't outlive the cppu infrastructure which is
required for them to work correctly. Currently the cppu stuff deliberately
leaks, so this isn't noticeable at the moment.

(as an aside, the ctor argument to ::cppu::OImplementationId is passed down to
rtl_createUuid as bUseEthernetAddress and is ignored these days, so I've made
the change to omit it here as well, which makes things simpler)