"Optimised" build options, SDL1--

- removed SDL1 support unless needed by NaCl
- updated .spec & PKGBUILDs
- ozCore
  * added explicit template parameters where missing
- cmake
  * OZ_UNITTEST merged into OZ_TESTS
  * OZ_STANDALONE -> OZ_BUNDLE & cleanup
  * removed OZ_SHARED_LIBS, the same effect can be achieved with cmake built-in
    BUILD_SHARED_LIBS