title: matplotlib savefig.directory in style file not working
body: <p>I am using a style file to control the default behavior of my figure saving and have set the following in <code>save-article.mplstyle</code> under the directory <code>/Users/me/.matplotlib/stylelib</code>.</p>
  
  <pre><code>savefig.directory   : ./Plots/ 
  </code></pre>
  
  <p>When I only use the current directory <code>.</code>, I get the expected output with something like <code>plt.savefig("test.pdf")</code>. When I use <code>./Plots/</code>, the file does not appear. I can provide my full <code>save-article.mplstyle</code> file if that is helpful. The <code>Plots</code> directory currently exists and I can save files to it using commands like <code>plt.savefig("./Plots/test.pdf")</code>. When I check rcParams after loading the style files, the correct information is populated in the file.</p>
  
  <p>How can I fix this?</p>