Merge #208: Jet wrappers

c9d5c00 Update libsimplicity (Christian Lewe)
71bea25 FFI: Add WRAP_ macro (Christian Lewe)
11e35ba FFI: Update vendor script (Christian Lewe)

Pull request description:

  Update libsimplicity and use generated jet wrappers.

ACKs for top commit:
  apoelstra:
    ACK c9d5c00

Tree-SHA512: 3eb1d79198b2ee7946dc5efadf9d178407959e5fc4d2fca62ebc504c540ee0de0b3b4c1282ed80379b5277222ed06caf4a9cb4ead8ffe503d79f4791c396b487

simplicity-sys/build.rs

@@ -50,8 +50,7 @@ fn main() {
         .files(test_files)
         .file(Path::new("depend/wrapper.c"))
         .file(Path::new("depend/env.c"))
-        // TODO Enable once file has been autogenerated
-        //.file(Path::new("depend/jets_wrapper.c"))
+        .file(Path::new("depend/jets_wrapper.c"))
         .include(simplicity_path.join("include"));
 
     if cfg!(not(fuzzing)) {