Update binutils on Travis

Author: ignisf

.travis.yml

@@ -36,6 +36,8 @@ addons:
 bundler_args: --jobs=4 --retry=3
 before_install:
   - if [ "$TRAVIS_OS_NAME" == "linux" ]; then gem update bundler; fi
+  - if [ "$TRAVIS_OS_NAME" == "linux" ]; then sudo apt-get update; fi
+  - if [ "$TRAVIS_OS_NAME" == "linux" ]; then sudo apt-get upgrade binutils; fi
   - if [ "$TRAVIS_OS_NAME" == "osx" ]; then sudo gem install bundler; fi
 script:
   - git submodule update --init