build: Add librustsyntax to snapshots

Author: brson

src/etc/snapshot.py

@@ -27,24 +27,28 @@ def scrub(b):
               "lib/libcore-*.so",
               "lib/libstd-*.so",
               "lib/librustc-*.so",
+              "lib/librustsyntax-*.so",
               "lib/librustrt.so",
               "lib/librustllvm.so"],
     "macos": ["bin/rustc",
               "lib/libcore-*.dylib",
               "lib/libstd-*.dylib",
               "lib/librustc-*.dylib",
+              "lib/librustsyntax-*.so",
               "lib/librustrt.dylib",
               "lib/librustllvm.dylib"],
     "winnt": ["bin/rustc.exe",
               "bin/core-*.dll",
               "bin/std-*.dll",
               "bin/rustc-*.dll",
+              "bin/rustsyntax-*.dll",
               "bin/rustrt.dll",
               "bin/rustllvm.dll"],
     "freebsd": ["bin/rustc",
                 "lib/libcore-*.so",
                 "lib/libstd-*.so",
                 "lib/librustc-*.so",
+                "lib/librustsyntax-*.so",
                 "lib/librustrt.so",
                 "lib/librustllvm.so"]
     }