Do not traverse unaccessible subdirectories (issue 51)

lemval

2012-01-31 1c30dad2115fc513791d8a5b292ad0f7d7b85749

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@REM arch = x86, amd64, or ia32 
SET ARCH=amd64 
 
@REM Delete the gitblit service 
"%CD%\%ARCH%\gitblit.exe" //DS//gitblit