Fix travis build

.travis.yml

@@ -10,7 +10,11 @@ env:
     - EMULATE_READER=1 USE_NO_CCACHE=1
 
 before_install:
-    - sudo apt-get update
+    - sudo add-apt-repository -y ppa:ubuntu-toolchain-r/test
+    - sudo apt-get update -qq
+    - sudo apt-get install -qq g++-4.8
+    - sudo update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-4.8 50
+    - sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-4.8 50
 
 install:
     # nasm for building libpng

base

@@ -1 +1 @@
-Subproject commit dd4d31c222e20dd49337b6387d31a04d8e09e9ed
+Subproject commit 9d9e1297339160aabc3e0d73fa131dbce7bddbae