[ipxe-devel] [ipxe] simple uefi usability fix (#38)

[Ben Hildred]

I always thought the control-x should have been Esc, the tab and watchdog timer change ideas are not  good but the control-c could be argued either way. 

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Reply to this email directly or view it on GitHub:
https://github.com/ipxe/ipxe/pull/38#issuecomment-124626312
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