* New SAL_INFO..., SAL_WARN... macros.
* New SAL_STREAM supersedes OSL_FORMAT.
* oustringostreaminserter.hxx moved from unotest to rtl (and always UTF-8 now).
* TODO to enable GCC __attribute__((format)) in sal/log.h (requires call-site
  cleanup).
* Further functionality in tools/debug.hxx (DBG_MEMTEST, DBG_CTOR, etc.) not yet
  addressed.
* Some replacements tools String -> rtl::OUString.