 - We _must_ evaluate the return values of these system calls.  - fix windows driveletter detection.
 - We _must_ evaluate the return values of these system calls.
 - fix windows driveletter detection.

pekeler/arangodb,kkdd/arangodb,nvoron23/arangodb,abaditsegay/arangodb,abaditsegay/arangodb,razvanphp/arangodb,aurelijusb/arangodb,razvanphp/arangodb,pekeler/arangodb,aurelijusb/arangodb,pekeler/arangodb,aurelijusb/arangodb,kkdd/arangodb,nvoron23/arangodb,abaditsegay/arangodb,razvanphp/arangodb,abaditsegay/arangodb,pekeler/arangodb,pekeler/arangodb,mujiansu/arangodb,mujiansu/arangodb,nvoron23/arangodb,aurelijusb/arangodb,abaditsegay/arangodb,kkdd/arangodb,mujiansu/arangodb,aurelijusb/arangodb,abaditsegay/arangodb,mujiansu/arangodb,abaditsegay/arangodb,razvanphp/arangodb,kkdd/arangodb,aurelijusb/arangodb,razvanphp/arangodb,nekulin/arangodb,razvanphp/arangodb,nekulin/arangodb,abaditsegay/arangodb,nvoron23/arangodb,nekulin/arangodb,kkdd/arangodb,nvoron23/arangodb,nekulin/arangodb,kkdd/arangodb,nvoron23/arangodb,razvanphp/arangodb,nekulin/arangodb,kkdd/arangodb,nekulin/arangodb,nvoron23/arangodb,aurelijusb/arangodb,nekulin/arangodb,kkdd/arangodb,aurelijusb/arangodb,razvanphp/arangodb,mujiansu/arangodb,aurelijusb/arangodb,razvanphp/arangodb,kkdd/arangodb,nekulin/arangodb,pekeler/arangodb,nvoron23/arangodb,nekulin/arangodb,mujiansu/arangodb,abaditsegay/arangodb,razvanphp/arangodb,nvoron23/arangodb,pekeler/arangodb,pekeler/arangodb,mujiansu/arangodb,aurelijusb/arangodb,mujiansu/arangodb,pekeler/arangodb,mujiansu/arangodb,nekulin/arangodb,pekeler/arangodb,nvoron23/arangodb,mujiansu/arangodb,kkdd/arangodb,abaditsegay/arangodb