to comply with new plantlife API
In addition to that, there have been numerous other, smaller changes:
* Tweaked palm tree model to add coconuts
* Tweaked size of all "fruit" items (really just cones). Rotated their images
in inventory and wield.
* Changed descriptions of sideways trunks to "Sideways Xxxx Trunk"
* Tweaked names of jungle tree leaves to be Jungle Tree Leaves (Xxxx)
* Moved jungletree trunk, sideways trunk, sapling into nodedef loop
* Renamed trunks and trunk tops to bear "_trunk" and "_trunk_top" in their
filenames.
* Added copies of default jungle tree trunks and tops, with naming similar to
the above change.
* Re-arranged init.lua to put all leaves/needles definitions in one place.
* Deleted some outdated textures.
* combined leaves definitions back into main loop with an exception for
jungletrees (if that one is called for, it is skipped, because leaves for
those trees are explicitly defined later)
* Made all leaves drop saplings when dug, 1/20 chance.
* Added leafdecay radii to main tree table but disabled the use of it. To be
implemented in the future. Disabled leaf decay for firs.
This code will slow the map generator down a little due to bugs therein, and is
generally still in the experimental stages, but it works and is actually quite
fast!
Most of the added code written by RealBadAngel
Also adds a couple of additional biome controls to jungle trees and conifers.
Also adds a text file describing the biome settings in a human-readable manner.
At present, this doesn't actually add anything new, it just refactors the
code to allow for more trees, and adds a bunch of biome definitions, tree
models, textures, etc. but no code to use them, yet.
