Make sure that the configuration file suffix is propagated to subdirs

This prevents alternate configuration files that aren't in the top-level
directory from being ignored.
merge dev_5_0 -D org -I include -E exclude: PR 856 (Initial version of bfCheckJavaMemory)
merge dev_5_0 -D org -I include -E exclude: PR 860 (UpgradeChecker: fix the stable version number)
merge dev_5_0 -D org -I include -E exclude: PR 864 (Make sure that the configuration file suffix is propagated to subdirs)