Move large chunks of matlab.el to matlab-complete.el,
matlab-shell.el, and matlab-topic.el.
Update existing .el files to require new files as needed.
Update Makefiles to no longer have Makefile check.
matlab.el: Settings updates:
(matlab-mode-version): Update to 4.0 (based on expectations of this change.)
(matlab-functions-have-end): set to t. Fix doc.
(matlab-functions-have-end-p): If guess, then guess, otherwise
base it on matlab-functions-have-end.
(matlab-fill-code): set to nil.
(matlab-keyword-list, matlab-block-end-pre-if): remove endfunction
(matlab-calculate-indentation): remove matlab-ltype-endfunction-comm.
matlab.el: code moving
(matlab-frame-init): moved earlier near keymaps.
