sign.sh: Allow retries on EXE signing as well as DLLs (#1553)
sign.sh: Allow retries on EXE signing as well as DLLs (#1553)

Follow on from https://github.com/AdoptOpenJDK/openjdk-build/commit/8860634d93597f9a423c7d38b581ddb08d34bbfd
karianna/openjdk-build,AdoptOpenJDK/openjdk-build,karianna/openjdk-build,AdoptOpenJDK/openjdk-build