Update some config locations

Author: bjorn3

config.toml.example

@@ -518,7 +518,7 @@ changelog-seen = 2
 # This is an array of the codegen backends that will be compiled for the rustc
 # that's being compiled. The default is to only build the LLVM codegen backend,
 # and currently the only standard options supported are `"llvm"` and `"cranelift"`.
-#codegen-backends = ["llvm"]
+#codegen-backends = ["llvm", "cranelift"]
 
 # Indicates whether LLD will be compiled and made available in the sysroot for
 # rustc to execute.

src/bootstrap/configure.py

@@ -344,7 +344,7 @@ def set(key, value):
     elif option.name == 'target':
         set('build.target', value.split(','))
     elif option.name == 'full-tools':
-        set('rust.codegen-backends', ['llvm'])
+        set('rust.codegen-backends', ['llvm', 'cranelift'])
         set('rust.lld', True)
         set('rust.llvm-tools', True)
         set('build.extended', True)