Pull new version of protobuf sources.

third_party/protobuf/ruby/travis-test.sh

Index: third_party/protobuf/ruby/travis-test.sh
diff --git a/third_party/protobuf/ruby/travis-test.sh b/third_party/protobuf/ruby/travis-test.sh
new file mode 100644
index 0000000000000000000000000000000000000000..9ec7eb22c03c73c096070d2c575028266b2ae618
--- /dev/null
+++ b/third_party/protobuf/ruby/travis-test.sh
@@ -0,0 +1,26 @@
+#!/usr/bin/env bash
+
+# Exit on any error.
+set -e
+
+test_version() {
+  version=$1
+  if [ "$version" == "jruby" ] ; then
+    # No conformance tests yet -- JRuby is too broken to run them.
+    bash --login -c \
+      "rvm install $version && rvm use $version && \
+       which ruby && \
+       gem install bundler && bundle && \
+       rake test"
+  else
+    bash --login -c \
+      "rvm install $version && rvm use $version && \
+       which ruby && \
+       gem install bundler && bundle && \
+       rake test && \
+       cd ../conformance && \
+       make test_ruby"
+  fi
+}
+
+test_version $1