title: What is a quilt patchset?
body: <p>There is a git command called <a href="http://www.kernel.org/pub/software/scm/git/docs/git-quiltimport.html" rel="noreferrer">git-quiltimport</a>. Its man pages says it "Applies a quilt patchset onto the current git branch, preserving the patch boundaries, patch order, and patch descriptions present in the quilt patchset."</p>
  
  <p>However, it doesn't define what a "quilt patchset" is. What is a "quilt patchset"?</p>