Replace yellow pipe.

Source: http://forum.secretchronicles.de/topics/158#p774
Add compatibility code for yellow pipe replacement
Adjust pipe collision rectangles.

Alex can now properly walk over horizontal pipes without flying.
Add .settings files for the new pipe variants.
Fix menu level and add it to world_4
Add some missing compatibility code for green pipes
Fix windows icon resource
Desert Break In level - fixed positioning of several objects, added decorations, adjusted difficulty
Fix typo in update limits code

This caused upper camera limit to not be
adjusted properly when loading old levels,
so may leave some objects out of reach.

Verified fix on mountain_trials, which had
objects beyond camera limit