title: oldLC object when creating package
body: <p>I've just noticed whenever I build and reload a package, I have this new object "oldLC." It's never been there before, so why is it appearing now, and how can I make it stop? The only thing I can think of that has changed since the last time I made a package until now is that I installed the newest rstudio.</p>
  
  <pre><code>&gt; load_all()
  Loading tmp
  &gt; ls()
  character(0)
  
  Restarting R session...
  
  &gt; library(tmp)
  &gt; ls()
  [1] "oldLC"
  &gt; oldLC
  [1] "en_US.UTF-8"
  
  
  &gt; sessionInfo()
  R version 3.0.2 (2013-09-25)
  Platform: x86_64-apple-darwin10.8.0 (64-bit)
  
  locale:
  [1] en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8
  
  attached base packages:
  [1] stats     graphics  grDevices utils     datasets  methods   base     
  
  other attached packages:
  [1] tmp_0.1        roxygen2_3.1.0 devtools_1.4.1
  
  loaded via a namespace (and not attached):
   [1] brew_1.0-6      codetools_0.2-8 digest_0.6.4    evaluate_0.5.1 
   [5] httr_0.2        memoise_0.1     parallel_3.0.2  Rcpp_0.11.0    
   [9] RCurl_1.95-4.1  stringr_0.6.2   tools_3.0.2     whisker_0.3-2  
  </code></pre>