Make ASCII control characters ^[, ^\, ^], ^^, and ^_ work on Qt,
at least partly. Mainly for ^[ to be treated as ESC, which works
if you're aborting a count on the map but doesn't cancel out of
menus [yet?]. I didn't attempt to make ^@ send NUL.
Also, fix the hardcoded macros (activated by F1: rest 100 turns,
F2: search 20 times, and Tab: ^A to do-again). The first two sent
'n' before the count so wouldn't work as intended with number_pad
off, and the third was executing twice as if Tab sent two ^A's
instead of just one. Resting and searching might have been getting
duplicated too; I don't know how to simulate the relevant keys.
(I temporarily swapped definitions for F2 and Tab to test the
number_pad fix but hadn't done that earlier when I discovered the
Tab bug.)
3cd21e1d4f