fix: rename builtin static variables to avoid linker ambiguity across modules

script/generate_builtins.py

@@ -4,7 +4,7 @@ import glob
 import os.path
 import re
 
-PATTERN = re.compile(r'libSource =\n("(.|[\n])*?);')
+PATTERN = re.compile(r'LibSource =\n("(.|[\n])*?);')
 
 def copy_builtin(filename):
   name = os.path.basename(filename)
@@ -24,7 +24,7 @@ def copy_builtin(filename):
   # in the C string literal.
   wren_source = wren_source.replace('\\', '\\\\')
 
-  constant = "libSource =\n" + wren_source + ";"
+  constant = "LibSource =\n" + wren_source + ";"
 
   with open("src/vm/wren_" + name + ".c", "r") as f:
     c_source = f.read()