* Remove unused parameters from SendDebugMessage functions
* Add SendDebugEntry and SendDebugExit functions for tracking
function entry/exit
* Add indenting and function names to log entries
* Remove unused debug functions
* Eliminate now-unused hwnd parameter in initialization functions
* Replace Log,LogEntry,LogExit functions with SendDebug equivalents in
kmtip
Many functions now have SendDebugEntry/SendDebugExit (or
return_SendDebugExit) pairs. It is important to SendDebugExit on all
returns from a function to keep the log indent depth consistent. In some
cases I chose not to add these logging calls, e.g. on frequently called
functions such as the message hooks.