New bug reports in Mint 17.1 RC

All editions
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	- [RFT] rephrase OEM isolinux/grub option --> s/Start Linux Mint/Preinstall Linux Mint/g
	- implement visual upgrade path for Mint 17 users (use mint-meta as a precondition)

Cinnamon Edition - last processed comment: #220
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	- file-roller: fixed in version 3.9.2 (released Sept 18, 2013) http://fileroller.sourceforge.net/news.html https://bugzilla.gnome.org/show_bug.cgi?id=697756

MATE Edition - last processed comment: #79
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