Indirect absolute references made relative

Discovered many indirect references, most with offsets of ix register
where high byte and low byte of address are set separately. These
absolute references have been made relative through extensive use of the
get high byte and low byte operators > and < in WLA DX.This includes
data at the end of bank 1, which has now been converted to asm defines
(the format is a length byte followed by that many words, usage still
unknown) and many functions, some labels newly created this way. The
functions seem to use the same continuation technique as flashing colors
in item usage, where the address of the next function is stored and
called after a certain event, effectively breaking out of processing
until something else happens.