Update Qt installation to 5.6.3 for Travis

Signed-off-by: Thiago Macieira <[email protected]>

Author: thiagomacieira

.travis.yml

@@ -4,19 +4,17 @@ os:
   - osx
 env:
   - CFLAGS="-O0 -g" QMAKEFLAGS="-config debug" PATH=/opt/qt56/bin:/usr/local/opt/qt5/bin:$PATH
+addons:
+  apt:
+    sources:
+      - sourceline: 'ppa:beineri/opt-qt563-trusty'
+    packages:
+      - qt56base valgrind
 install:
-  - if [ "${TRAVIS_OS_NAME}" = "linux" ]; then
-        sudo apt-add-repository -y ppa:beineri/opt-qt562;
-        sudo apt-add-repository -y ppa:ubuntu-toolchain-r/test;
-        sudo apt-get update -qq;
-        sudo apt-get install -y qt56base valgrind g++-5;
-    else
+  - if [ "${TRAVIS_OS_NAME}" != "linux" ]; then
         brew install qt5;
     fi
 script:
-  - if [ "${TRAVIS_OS_NAME}" = "linux" ]; then
-        sudo ln -sf g++-5 /usr/bin/g++;
-    fi
   - make -s -f Makefile.configure configure | tee .config
   - make
         CFLAGS="$CFLAGS"