Updated (sh) installer to tell the user which distros to avoid
Make sure /etc/lxdm/* are executable (chroot in if necessary)
Should be *loading* record, not saving it, after modifying the on-disk
copy. Fixed.
Tidied up install (sh) script. Makes clear which distros are beta &
which are alpha.
'Linux' now reads 'GNU/Linux' (keep ppl happy)