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)
Added section about function object return types
Added section about tuples
wip
Added a section about explicit conversion operators.
Added a section about long long int