MT and Synth fixes

MT Fixes - example script was in old format, H was trying to put empty tubes in the recipe as the handler for that was still expecting a high value for the empty tube. FOr some reason the synth recipe example had lead ingots and ice in it, changed to y'know, chemicals. trying to place minetweaked chemicals won't cause crashes any more.

Synth fixed a number of things, no longer ignores 7 slots of the player's inventory when shift clicking the max amount out and won't discard partial stacks (eg crafting snow with 1 empty slot, it used to pull the ingredients for 20 but only gave you 16), now doesn't do the complete failure at Line 276 which @way2muchnoise reintroduced for some unknown reason and returns the proper amount on crafting.

think that's about it