AGS: Beer: crash with error("TODO: pivot_sprite")

[lolbot-iichan]

Testcase:

1. Get ​https://store.steampowered.com/app/782280/Beer/
2. Start a new game
3. Click on the Beer

Result: console appears with message "ERROR: TODO: pivot_sprite!"

Note: ags/lib/allegro/gfx.cpp contains this code:

void pivot_sprite(BITMAP *bmp, const BITMAP *sprite, int x, int y, int cx, int cy, fixed angle) {

error("TODO: pivot_sprite");

}

[criezy]

pivot_sprite is now implemented, and I have tested that it seems to work in a couple of games. So the next daily build should work.

[lolbot-iichan]

Thanks!
Compiled a build from master branch - the game is fully playable now.