GNURoot Debian

Dec 22, 2016

1) add PRoot extension to attempt to fix the size returned by lstat on Pixel devices running android N 7.1 (actually previous beta release)
2) no longer install packages as part of patching. it is not necessary at this time and is hurting some users.
3) fix PRoot issue where fstat could sometimes incorrectly fail and a blank path would be printed to the user.