Mixed-target federations

test/C/src/serialization/PersonProtocolBuffers.lf

@@ -9,13 +9,13 @@
  *
  * $ brew install protobuf
  *
- * Building protobuf from source is slow, so avoid doing that if possible. Next install the C plugin
- * for protocol buffers from
- *
- * https://github.com/protobuf-c/protobuf-c
- *
- * The code generator assumes that executables are installed within the PATH. On a Mac, this is
- * typically at /usr/local/bin.
+ * (Building protobuf from source is slow, so avoid doing that if possible.)
+ * 
+ * Next install the C plugin for protocol buffers:
+ * 
+ * $ brew install protobuf-c
+ * 
+ * This comes from https://github.com/protobuf-c/protobuf-c.
  */
 target C {
   protobufs: Person.proto

test/C/src/serialization/ProtoNoPacking.lf

@@ -8,13 +8,14 @@
  *
  * $ brew install protobuf
  *
- * Building protobuf from source is slow, so avoid doing that if possible. Next install the C plugin
- * for protocol buffers from
+ * (Building protobuf from source is slow, so avoid doing that if possible.)
+ * 
+ * Next install the C plugin for protocol buffers:
+ * 
+ * $ brew install protobuf-c
+ * 
+ * This comes from https://github.com/protobuf-c/protobuf-c.
  *
- * https://github.com/protobuf-c/protobuf-c
- *
- * The code generator assumes that executables are installed within the PATH. On a Mac, this is
- * typically at /usr/local/bin.
  */
 target C {
   protobufs: [ProtoHelloWorld.proto]