Removed code which redundantly checks values of sf.spec.splitbuild, sf.spec.os.skipbuild, and sf.spec.s60.skipbuild. Removed setting of sf.spec.sysdef.version, as nothing ever reads its value. Removed sf-check-missing-s60-files, as there's nothing to call it any more.

@echo off
setlocal
if not defined HELIUM_HOME set HELIUM_HOME=%~dp0..\..\..\..\helium
echo %HELIUM_HOME%
rem call ..\..\build\env.bat
call %HELIUM_HOME%\hlm.bat %*
endlocal