[Swift-devel] r1793 restoring of sites.xml LRC

[Ben Clifford]

r1793 puts back in the sites.xml element. I removed that deliberately as a 
config option that does nothing, has done nothing, and likely will not do 
anything either ever or for a long time.

Its displeasing to my sense of user interface aesthetics to have 
configuration options that (deliberately) do nothing; they take up 
documentation space (should anyone bother documenting them); lead to user 
confusion when a user experiments with changing it to no effect; they lead 
to cruft buildup in the code and in configuration files.

If this config option is going to stay, then I think it should at least 
print a warning indicating that it is ignored when specified rather than 
silently being ignored.

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