Reverse order of visual gears linked list
Now vgears will render in the order they have been added.
Older visual gears are rendered earlier, so they are "behind" newer visual gears.
This has been primarily done to fix the render order of speech bubbles (
bug #287).
Lua scripts for engine testing. These scripts are the same as other Lua scripts
in Hedgewars, but you ought to call `EndLuaTest(TEST_SUCCESSFUL)` or
`EndLuaTest(TEST_FAILED)` when the test is completed.