Always exclude "DEFAULTS" and only add when "force_include".

[vrongmeal]

Every time there's a need to customize the excludes, "DEFAULTS" is required to be added in the exclude block of the config (or passed as a flag). This is annoying since most (99.99%) of the time the default excluded directories are to be excluded. This can be solved by adding a force_include option in the config, for when the excluded directories are required to be included.

How this would work is, if there's a directory being excluded in the excludes, force_include will override this and include the directory, no matter what.