add convenient updexe.bat, until install used...

build/cmake/updexe.bat

@@ -0,0 +1,57 @@
+@setlocal
+@REM copy the EXE into C:\MDOS, IFF changed
+@set TMPDIR=C:\MDOS
+@set TMPFIL1=tidy5.exe
+@set TMPFIL2=tidy5-32.exe
+@set TMPSRC=Release\%TMPFIL1%
+@if NOT EXIST %TMPSRC% goto ERR1
+@echo Current source %TMPSRC%
+@call dirmin %TMPSRC%
+
+@if NOT EXIST %TMPDIR%\nul goto ERR2
+@set TMPDST=%TMPDIR%\%TMPFIL2%
+@if NOT EXIST %TMPDST% goto DOCOPY
+
+@echo Current destination %TMPDST%
+@call dirmin %TMPDST%
+
+@REM Compare
+@fc4 -q -v0 -b %TMPSRC% %TMPDST% >nul
+@if ERRORLEVEL 2 goto NOFC4
+@if ERRORLEVEL 1 goto DOCOPY
+@echo.
+@echo Files are the SAME... Nothing done...
+@echo.
+@goto END
+
+:NOFC4
+@echo Can NOT run fc4! so doing copy...
+:DOCOPY
+copy %TMPSRC% %TMPDST%
+@if NOT EXIST %TMPDST% goto ERR3
+@call dirmin %TMPDST%
+@echo Done file update...
+@goto END
+
+:ERR1
+@echo Source %TMPSRC% does NOT exist! Has it been built? *** FIX ME ***
+@goto ISERR
+
+:ERR2
+@echo Destination %TMPDIR% does NOT exist!
+@goto ISERR
+
+:ERR3
+@echo Copy of %TMPSRC% to %TMPDST% FAILED!
+@goto ISERR
+
+:ISERR
+@endlocal
+@exit /b 1
+
+:END
+@endlocal
+@exit /b 0
+
+@REM eof
+