fix bug with desynced camera positions

Reduce number of walk bonuses further, doubt even 128 are needed. Fix count reset.

Debug commit Added code to replace sprites with a checkerboard pattern in order to identify filtering issues. This version only renders DrawSprite()'s with the checkerboard pattern for debugging purposes cleaned up some unneeded stuff

rework saving of camera positions so there is no need to know framerate during prerecording. support x264 on older versions of ffmpeg/libav. remove some unuseful options.

Tell AI to avoid edges, especially ones over water (this does not include checking whether a knock could drown yet). Also make flakes pick a new random dx/dy on respawn to further reduce patterns. Also disable a couple of weapons for the particularly dumb AI levels, and disable switching for the dumbest.

Merge

merge

Spread the droplets around more so it looks less square (looked especially bad with piano). Slow down large splashes a bit for dramatic purposes, also taking low-g into account. Small splashes you can't really tell anyway.

First try to use framebuffer, instead of auxilary buffer. On my computer this fixes large resolutions (e.g. 1920x1080)

Introduce uGearsHandlers.pas, for now only part of cake handlers is moved there

Move SDL_GetTicks() to another place, maybe this will fix sound desync. Also, ensure that thumbnail is aslways saved.

A bit more convoluted, but more attractive visually