Fix a few nasty Wimp bugs
Detail: s/Wimp05 (setcaretcoords_fancy), s/Wimp07 - Fix some dodgy comments that had trailing backslashes, causing the next line of code to be gobbled by objasm and omitted from the compiled code. The code in question has been around for a long time, so I guess a recent objasm change (or the switch from aasm) has caused the dodgy comments to turn malicious. The setcaretcoords_fancy bug was the cause of bug #241 in the ROOL tracker. s/Wimp05 (int_set_caret_position) - While testing the #241 fix, I found that opening the filer 'rename' menu, typing text (enough to cause the icon to scroll), and then clicking away to close the menu would cause an infinite abort loop. The cause seemed to be int_set_caret_position mistakenly setting the caret window ptr to 0 instead of nullptr (-1), which would then cause setwindowptrs to die when it tried dereferencing what it thought was a valid pointer. Although initially confused about how this bug has gone unnoticed so far, I've now realised the abort was just down to alignment exceptions being turned on and the code would have "worked" on <=ARMv5. Admin: Tested on rev C2 beagleboard. Fixes bug #241. Version 5.08. Tagged as 'Wimp-5_08'
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