Renamed the "plants" module to "plants_lib". Any modder that directly depends

on that library need only adjust their mods' depends.txt files.  I've already
done this for flowers, junglegrass and poisonivy as included in this modpack,
so any mod that depends on one of *those* needs no changes at all.  No changes
to the API or any functionality.

junglegrass/depends.txt

@@ -1 +1 @@
-plants
+plants_lib