Use codes rather than the printable names in data files

[tangar]

PWMA ported from V new feature - https://github.com/draconisPW/PWMAng...d1a02cb36047ff and I see from the my variant perspective that this feature is actually pretty bad for variant's (and future V!) customization... it's much easier to customize stuff based on name, than at FEAT. Eg I customize rng landscape like this in Tangaria:

# grass, water, tree, packed dirt
name:grass
feat:5:grass:,
chance:0:floor 0 grass:20
chance:1:floor 1 grass::20
chance:2:floor w grass:20
chance:3:A5 plants I:15
chance:4:flower 0 green:1
chance:5:flower 1 green:1
chance:6:flower 2 green:1
chance:7:flower 3 green:1
chance:8:flower 4 green:1
chance:9:flower 5 green:1
chance:10:flower 6 green:1
chance:11:A5 plants G:1
chance:12:A5 plants H:1
chance:13:A5 plants J:1
chance:14:A5 plants K:1
chance:15:A5 plants L:1
chance:16:obj_grass A puddle:1
# small trees
chance:17:tree H:1
chance:18:tree I:1
chance:19:tree J:1
chance:20:tree K:1
chance:21:tree L:1
chance:22:tree M:1
chance:23:tree N:1
chance:24:tree O:1
chance:25:tree P:1
chance:26:tree Q:1
chance:27:tree R:1
chance:28:tree S:1
sound:WILD_GRASS

with this update customization will be much harder... In my variant there are several thousands of terrains ( https://github.com/igroglaz/Tangaria...ta/terrain.txt ) and now with this change they all won't work...

Of course it's not a problem, as I can just ignore this update and stay in old version, though I'll loose (even more) compatibility to PWMA and V... But still it's really bad change. IMHO it's important to expand possibilities for customization rather than to reduce them

[tangar]

for all who struggle to port stuff to a new system, I wrote tiny script in Golang to do it fast & ez:

https://github.com/igroglaz/Tangaria_tools/commit/71ee52e876d26aa7c30b776d9696570cf4061901

it will convert names to CODES and also put it to terrains .h file

so after all it wasn't too hard to port this feature..