Fix width calculation in branch graph when there are 0 or 1 commits

James Moger

2013-09-27 b384a9923314ef0ab7ec0e9f506c8d52cc31f5fc

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