Merge pull request #373 from jaymzh/mounts_7

Fix Linux::Filesystem reading of /proc/mounts
Revert "Fix Linux::Filesystem reading of /proc/mounts"
Merge pull request #374 from opscode/revert-373-mounts_7

Revert "Fix Linux::Filesystem reading of /proc/mounts"
Fix reading /proc/mounts harder

Due to kernel bugs we have to nonblock read.