even better BuildGithubReleaseBranch.bat

Dist/BuildGithubReleaseBranch.bat

@@ -1,17 +1,30 @@
-set PATH=%PATH%;C:\Program Files (x86)\git\bin;C:\Program Files\git\bin
+set OUTFILE=BizHawk-Github-Master.zip
 set WORKDIR=.build-github-master
+
+set PATH=%PATH%;C:\Program Files (x86)\git\bin;C:\Program Files\git\bin
+
+rem cleanup old working and output files
+del ..\..\%OUTFILE%
 rmdir /s /q %WORKDIR%
+
+rem prepare working directory for clone
 mkdir %WORKDIR%
-cd %WORKDIR%
 
 rem http://stackoverflow.com/questions/13750182/git-how-to-archive-from-remote-repository-directly
+cd %WORKDIR%
 git clone --depth=1 --single-branch --branch Release http://github.com/TASVideos/BizHawk.git .
 
+rem use updated build scripts
+copy /y ..\BuildAndPackage_Release.bat dist
+copy /y ..\BuildAndPackage.bat dist
+
+rem build the branch
 cd dist
 call BuildAndPackage_Release.bat
 
 rem make sure we save the output!
-move BizHawk.zip ..\..\BizHawk-Github-Master.zip
-cd ..\..
+move BizHawk.zip ..\..\%OUTFILE%
 
+rem cleanup
+cd ..\..
 rmdir /s /q %WORKDIR%