BldConfig c = loadDefaults(p, baseDir, null);
config.setDefault(c);
Properties options = config.getProps(null, BldConfig.P_OPTION);
if (!options.containsKey(BldAttr.OPTION_ADD_IMPORTS))
c.setProp(null, BldConfig.P_OPTION, BldAttr.OPTION_ADD_IMPORTS, "true");
// default omitUnusedImports option depends on number of bundles...
// we set it here to avoid it being written by save(),
// but as this may alter cached defaults, once set we have to reset it