(TopLevel): Define some unknown functions for avoiding byte compile warnings.

(TopLevel): Define some unknown functions for avoiding byte compile warnings.
(TopLevel): Require `emu' for picking up some macros, bind some colon keywords,
bind functions defined by `defun-maybe', bind defcustom'ed variables and
optimize byte code for `char-after' and `char-before' for old Emacsen.
(TopLevel): Attempt to load ~/.lpath.el.