Renaming function names for clarity.

rawWrite() has been renamed write().

Functions which take 'raw' addresses (ones which change according to
read or write) renamed to start ll (for low-level).

Functions which required rwMode to be passed now have inlined versions
with read or write in the name (eg start() now has startRead() and
startWrite() versions). The original functions which took rwMode
(eg start()) exist unchanged and are called by the new inlined
functions.