- time() is used to seed the RNG but since it only has second resolution,
the same values will be generated if it's called multiple times like
in the bug report
- BASIC using the global rng would be fine except that BASIC Randomize
takes an optional parameter to set the seed, which should continue
to be supported, but should not affect the RNG state for non-BASIC
users of comphelper::random
(regression from df466d79cb,
but the old implementation was even more delightfully absurd,
where Randomize was essentially srand((sal_uInt16)rand()) ...)
Change-Id: I0f30e509de08f933c02ac77c5d932b20e79586c5