Fixed a lot of warnings in wukong code. (not yet for Darjeeling itself)
Fixed a number of warnings in Darjeeling code.
Some aliasing warnings in wukong code (only turns up on avr, not on native). Still some issues remaining.
Fixed last warnings, and enabled -Werror for native and AVR architectures.
Set includeantruntime to false to make build behave the same on different environments and get rid of annoying warning.