clean version of the linker script, for reference before changing in the next commit, as copied from my /usr/lib/ldscripts/avr5.x file.  this commit work the same as the one before
move the sbox to the end of the file, since it needs to be be aligned to 0x100.  saves padding
maybe less hokey way of doing sbox positioning.
missing from last commit
smash the vectors down smaller
lots of stuff.  close to working, only get one page
cleanup
working!!!