Can it be assumed that...
- there are a number of bug fixes i.e. code compiled with 4.6 is more likely to behave as expected compared with code compiled with 4.2?
- there are some optimisations so code compiled with 4.6 should run faster than that compiled with 4.2?

These might seem unnecessary questions but I'd be interested to have clear answers all the same:
- can maemo make full use of software compiled with gcc/g++ 4.6?
- are additional/alternative libraries needed to run software compiled with 4.6 compared with 4.2? (seen note re: libc - anything else?)
- what happens when linking in other, existing libraries, frameworks or dependencies?
- if multiple library versions are required, will they fit on the device?