boost, typename and stuff

I've ported boost's shared_ptr to Symbian. It uses User::LockedInc, LockedDec and SafeInc interlocked functions.

Also I've written those missing typeinfo header. It turned out that pointer returned from typeid() points to stucture with only one data member: pointer to type's name. This is true for WINCW build, I don't know how things are in real device.

Ah, and shared_ptr port was possible because of STLPort port to Symbian by Marco.