Some fixes and new features for complex mkfiles#7

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DiablosOffens wants to merge 2 commits intodcjones:masterfrom

DiablosOffens:master

Commits on Aug 30, 2016

Add a '-l' option to limit the recursion depth of applying a specific rule.
DiablosOffens
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Fix endless loop in "expandDoubleQuoted".
DiablosOffens
committed