BUILD: Try pulling in stuff from artful instead of xenial on Travis CI

.travis.yml

@@ -17,20 +17,22 @@ matrix:
     - compiler: gcc
       env:
       - USECMAKE=0
-      - COMPILER_EVAL="CC=gcc-7 && CXX=g++-7"
     - compiler: gcc
       env:
       - USECMAKE=1
-      - COMPILER_EVAL="CC=gcc-7 && CXX=g++-7"
     - compiler: clang
       env:
       - USECMAKE=0
 
 before_script:
-  - echo "yes" | sudo add-apt-repository "deb http://archive.ubuntu.com/ubuntu xenial main universe restricted multiverse"
-  - echo "yes" | sudo add-apt-repository ppa:ubuntu-toolchain-r/test
+  - echo "yes" | sudo add-apt-repository "deb http://archive.ubuntu.com/ubuntu artful main universe restricted multiverse"
   - sudo apt-get update -qq
-  - sudo apt-get -y -o Dpkg::Options::="--force-confdef" -o Dpkg::Options::="--force-confnew" install g++-7 libc6-dev libc6 binutils binutils-dev libboost-all-dev libopenal-dev libmad0-dev libvorbis-dev zlib1g-dev liblzma-dev qtbase5-dev libqt5gui5 libqt5multimedia5 qtmultimedia5-dev libqt5multimediawidgets5
+  - sudo apt-get -y -o Dpkg::Options::="--force-confdef" -o Dpkg::Options::="--force-confnew" -o APT::Force-LoopBreak=1 install locales
+  - sudo sh -c 'echo "# Nope" > /var/lib/dpkg/info/libc-bin.triggers'
+  - sudo dpkg --configure -a
+  - sudo apt-get -y -o Dpkg::Options::="--force-confdef" -o Dpkg::Options::="--force-confnew" -o APT::Force-LoopBreak=1 install dpkg
+  - sudo apt-get -y -o Dpkg::Options::="--force-confdef" -o Dpkg::Options::="--force-confnew" -o APT::Force-LoopBreak=1 install --reinstall libc-bin
+  - sudo apt-get --reinstall -y -o Dpkg::Options::="--force-confdef" -o Dpkg::Options::="--force-confnew" -o APT::Force-LoopBreak=1 install gcc g++ libc6-dev libc6 binutils binutils-dev libboost-all-dev libopenal-dev libmad0-dev libvorbis-dev zlib1g-dev liblzma-dev qtbase5-dev libqt5gui5 libqt5multimedia5 qtmultimedia5-dev libqt5multimediawidgets5
 
 script:
   # Set the correct compiler