[IDEA] Tweaks

[CurlyMo]

1) Dropbear was replaces by SSH so we have SFTP and WinSCP availability
2) Marginal performance gain, but could be possible because we only use 1 and 2
3) We depend to much on Bash
4) Can you provide us with theoretical and practical test results
5) The ipv6 isn't loaded by default so ipv6 support isn't active by default. Users can activate it by loading the module themselves
6) Awaiting real world test results
7) Not an option
8) Needed for some XBMC functionality
9) We already clear caches when using xbian-config, however, we also want to implement clearing the caches on boot.

Remember that Raspbian was already more optimized for the RPi then debian because it's e.g. already using tmpfs for certain mountpoints. I will react on the other two links later...