Patch for examples/loadables/ln.c: support for -n option

[Julien Thomas]

Hi,

We use the ln builtin in a project in order to avoid several forks made 
by calling the coreutils ln executable. Attached is a patch to implement 
the -n option to the ln builtin, making calls like ln -snf ... doable as 
with the coreutils version.

Feel free to add this patch to the sources if you think it's worth it.

Kind regards,
Julien

0001-ln-Whitespace-cleanup-remove-tabulations.patch
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0002-ln-Add-missing-return-type-in-ln_builtin-function-de.patch
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0003-ln-Implement-n-option-as-in-corutils-ln.patch
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