Merge pull request #1994 from GOLinux/master

[Translating] 20141118 How to boot on an ISO image from Grub.md
Merge pull request #1995 from GOLinux/master

[Translated] 20141118 How to boot on an ISO image from Grub.md
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PUB:20141014 Linux FAQs with Answers--How to change default location of libvirt VM images

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PUB:20141029 How to Install MariaDB in Ubuntu 14.04 LTS

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Merge pull request #48 from LCTT/master

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