SOURCE_URL=https://github.com/roundcube/roundcubemail/releases/download/1.5-rc/roundcubemail-1.5-rc.tar.gz SOURCE_SUM=e5386d09c138d0b15e5a0d07189c3836f55cd25d5c4fcec40946fa5da2c4e3cd SOURCE_SUM_PRG=sha256sum SOURCE_FORMAT=tar.gz SOURCE_IN_SUBDIR=true SOURCE_FILENAME=