source-spec.ant.xml.ftl - Added change info for the BOM that lists submitted changesets between the baseline ('sf.previous.pdk.tag') and the synced changeset and writes to a changes.txt file in the BOM dir.

@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