avoids the problems of dangling uno singletons invalidated after the first
dispose and the chain of other singletons that don't expect to need to
re-initialize, etc.

reenable editeng cppunit test

inherit i18npool cppunit test from unotest base

drop LibreOfficeProtector, do "throwable" work in setUp/tearDown not
in ctors/dtors

and stick headers into the solver in the same hierarchy as is "standard"
so we don't have to patch so much, similiarly rename to libz

Though this specific piece of code is not used in CSV import it may act on
long lines now.

Mark

This fixes circular dependencies.

"If multiple objects within the same document share the same id attribute value, then the
document shall be considered non-conformant." . Although it apparently does not matter
much in practice.