Export water as MCLQ (Vanilla/BC liquids)

[T1ti]

trafficstars

Don't merge this, all it does is entirely replace MH2O saving by mclq for now

It's there if someone wants to improve it and merge

[ihm-tswow]

i think something like a basic toggle in the settings window would suffice

[Adspartan]

Thanks for providing the build for a while, I finally implemented that feature in 2893aad