How can I get MSBuild to do a full build of a Delphi project equivalent to dcc32 -b?

I believe it's /t:rebuild, the msbuild output lists "Deleting file: ..." for all the dcu's, then builds the project.

I use a batch file to call msbuild to build delphi projects, for Delphi 2007 and Delphi 2009 (which just has a different path for %BDS%):

set DCC_Quiet=true
set BDS=%ProgramFiles%\CodeGear\RAD Studio\5.0
set MSBuildBinPath=%WinDir%\Microsoft.NET\Framework\v2.0.50727

call %MSBuildBinPath%\msbuild /nologo /t:rebuild /p:config=Release %1 %2 %3 %4 %5

[Note, from this question, for Release "Build Configuration", Delphi 2009 is /p:config=Release, and Delphi 2007 is /p:Configuration=Release]