histedit: rename `tip` to `topmost`
I expected `tip` to be repo's tip when it was the rewritten set tip. I rename
the variable to the less ambiguous `topmost`.
@echo off
rem Windows Driver script for Mercurial
setlocal
set HG=%~f0
rem Use a full path to Python (relative to this script) as the standard Python
rem install does not put python.exe on the PATH...
rem %~dp0 is the directory of this script
"%~dp0..\python" "%~dp0hg" %*
endlocal