Fix Freelook on Linux and add speed reset.

Should fix issue 7692.
Also fixes issue 7147.

I have no idea if these changes will affect Mac or Windows users, so please test.
Update freelook description.
Changed the hotkeys to 1 and 2. Message in GUI changed to reflect this.
Merge pull request #1306 from i418c/freelook_fixes

Freelook fixes
Fixes ARMv7 FP loadstores using fastmem when not enabled.
Merge pull request #1565 from Sonicadvance1/armv7-fix-fastmem

Fixes ARMv7 FP loadstores using fastmem when not enabled.