In the NSIS installer script, allow a variable called OUTFILE_DIR to be passed on the command line, to specify the directory where the installer file will be created. Previously the file was created in an empty subdirectory, but this no longer works because of a bug in git (http://stackoverflow.com/questions/115983/how-do-i-add-an-empty-directory-to-a-git-repository) which will not add an empty directory. Rather than try to work around the bug, we now simply create the installer file directly in its final destination directory.