anchor.diff:     https://mirrors.nics.utk.edu/cran/src/contrib/mime_0.5.tar.gz \
      https://mirrors.nics.utk.edu/cran/src/contrib/httr_1.3.1.tar.gz \
      https://mirrors.nics.utk.edu/cran/src/contrib/RCurl_1.95-4.10.tar.gz \
  -   https://mirrors.nics.utk.edu/cran/src/contrib/Rcpp_0.12.15.tar.gz \
  +   https://mirrors.nics.utk.edu/cran/src/contrib/Rcpp_0.12.16.tar.gz \
      https://mirrors.nics.utk.edu/cran/src/contrib/BH_1.65.0-1.tar.gz \
      https://mirrors.nics.utk.edu/cran/src/contrib/xml2_1.1.1.tar.gz \
      https://mirrors.nics.utk.edu/cran/src/contrib/curl_3.1.tar.gz \
      https://mirrors.nics.utk.edu/cran/src/contrib/jsonlite_1.5.tar.gz \
  -   https://mirrors.nics.utk.edu/cran/src/contrib/digest_0.6.14.tar.gz \
  +   https://mirrors.nics.utk.edu/cran/src/contrib/digest_0.6.15.tar.gz \
      https://mirrors.nics.utk.edu/cran/src/contrib/downloader_0.4.tar.gz \
      https://mirrors.nics.utk.edu/cran/src/contrib/memoise_1.1.0.tar.gz \
      https://mirrors.nics.utk.edu/cran/src/contrib/plyr_1.8.4.tar.gz \
  
positive.code:    formatR_1.5.tar.gz \
     highr_0.6.tar.gz \
     markdown_0.8.tar.gz \
     stringi_1.1.6.tar.gz \
     magrittr_1.5.tar.gz \
     stringr_1.2.0.tar.gz \
     knitr_1.18.tar.gz \
     yaml_2.1.16.tar.gz \
     Rcpp_0.12.15.tar.gz \
     htmltools_0.3.6.tar.gz \
     caTools_1.17.1.tar.gz \
     bitops_1.0-6.tar.gz \
     digest_0.6.14.tar.gz \
     mime_0.5.tar.gz
  
  # dependency for R XML library
  
negative.code:    git2r_0.21.0.tar.gz \
     devtools_1.13.4.tar.gz \
     brew_1.0-6.tar.gz \
     stringi_1.1.7.tar.gz \
     magrittr_1.5.tar.gz \
     stringr_1.3.0.tar.gz \
     roxygen2_5.0.1.tar.gz \
     XML_3.98-1.9.tar.gz \
     BH_1.65.0-1.tar.gz \
  