title: GIT warning: too many files skipping inexact rename detection
body: <p>I am aware that the default rename limit is 100 and we can increase this value using the config <code>diff.renamelimit config</code></p>
  <p>What I am worried about is that, if this config is not setup, will there be a wrong merge or any missing code?
  I am trying to merge (git merge) 2 branches that have huge changes.</p>
  <p>Can someone throw more light about this config setting?</p>