changed C++-0x into C++0x
Added most sections about threads
added section about extern templates
added section about reference wrappers
Added section about template typedefs and using syntax
moved variadic templates to classtemplates, added alternative fun. syntax
Added sections about smart_ptrs
sections about regular exp. and unique_ptr added, auto_ptr mostly removed
repaired flex fileswitching sections in chapter concrete
Added section about unordered_map (hash_map removed)