use colors with grep flags from cpuinfo

use grep with color, it's easier to read colored output
Updated gentoo-latest-i686 template.
Added a FUSE module and USB commands (usbutils) to Gentoos. Other small adjustments.
Merge pull request #836 from glensc/patch-1

use colors with grep flags from cpuinfo
Merge pull request #837 from hyamamoto/gentoo-latest-i686

Updates for Gentoo latest (stage3-20131029-i686)
fixup 8c16b7d6, whichr is not really used
Merge pull request #838 from glensc/drop-whichr-dep

fixup 8c16b7d6, whichr is not really used
bump version 0.3.12
require ruby >= 1.9.2
add OS gem to check if on windows. This part was in use previously by whichr
release 0.3.12