~azzar1/unity/add-show-desktop-key

1079 by William Grant
Merge setup-refactor branch. This completely breaks existing installations;
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#ifndef NORM_H
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#define NORM_H
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/*
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 * Normalize the unix pathname in src eliminating . and .. sequences
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 * to yield an absolute path. Returns 0 on success, and -1 on error.
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 */
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int norm(char* dest, int len, const char* src);
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#endif /* NORM_H */