Use vcbuild for VS 2009.

Tools/buildbot/buildmsi.bat

@@ -4,12 +4,12 @@ cmd /c Tools\buildbot\external.bat
 @rem build release versions of things
 call "%VS90COMNTOOLS%vsvars32.bat"
 if not exist ..\db-4.4.20\build_win32\release\libdb44s.lib (
-   devenv ..\db-4.4.20\build_win32\Berkeley_DB.sln /build Release /project db_static
+  vcbuild db-4.4.20\build_win32\Berkeley_DB.sln /build Release /project db_static
 )
 
 @rem build Python
 cmd /q/c Tools\buildbot\kill_python.bat
-devenv.com /useenv /build Release PCbuild\pcbuild.sln
+vcbuild /useenv PCbuild\pcbuild.sln "Release|Win32"
 
 @rem build the documentation
 bash.exe -c 'cd Doc;make PYTHON=python2.5 update htmlhelp'