Travis: Remove x86 build for now, use g++ 4.8

.travis.yml

@@ -1,48 +1,48 @@
 matrix:
   include:
-    - os: linux
-      sudo: required
-      env: TARGET_CPU=x86
-
-    - os: linux
-      sudo: required
-      env: TARGET_CPU=x86 CMAKE_BUILD_TYPE=Debug
-
     - os: linux
       sudo: required
       env: TARGET_CPU=x64
+      addons:
+        apt: &x64-apt
+          sources:
+          - ubuntu-toolchain-r-test
+          packages:
+          - gcc-4.8
+          - g++-4.8
+          - libglib2.0-dev
+          - libgtk2.0-dev
+          - libxtst-dev
+          - libxss-dev
+          - libpci-dev
+          - libdbus-1-dev
+          - libgconf2-dev
+          - libgnome-keyring-dev
+          - libnss3-dev
+          - libasound2-dev
+          - libpulse-dev
+          - libudev-dev
 
     - os: linux
       sudo: required
       env: TARGET_CPU=x64 CMAKE_BUILD_TYPE=Debug
+      addons:
+        apt: *x64-apt
 
     - os: osx
       osx_image: xcode7.3
       env: TARGET_CPU=x64
+      addons:
+        apt: *x64-apt
 
     - os: osx
       osx_image: xcode7.3
       env: TARGET_CPU=x64 CMAKE_BUILD_TYPE=Debug
+      addons:
+        apt: *x64-apt
 
 language: cpp
 
-addons:
-  apt:
-    packages:
-    - build-essential
-    - libglib2.0-dev
-    - libgtk2.0-dev
-    - libxtst-dev
-    - libxss-dev
-    - libpci-dev
-    - libdbus-1-dev
-    - libgconf2-dev
-    - libgnome-keyring-dev
-    - libnss3-dev
-    - libasound2-dev
-    - libpulse-dev
-    - libudev-dev
-
 before_install:
 - DEPS_DIR="${TRAVIS_BUILD_DIR}/deps"
 - mkdir -p ${DEPS_DIR} && cd ${DEPS_DIR}
@@ -51,6 +51,7 @@ before_install:
     CMAKE_URL="http://www.cmake.org/files/v3.5/cmake-3.5.2-Linux-x86_64.tar.gz"
     mkdir cmake && travis_retry wget --no-check-certificate --quiet -O - ${CMAKE_URL} | tar --strip-components=1 -xz -C cmake
     export PATH=${DEPS_DIR}/cmake/bin:${PATH}
+    export CXX="g++-4.8" CC="gcc-4.8"
   else
     if ! brew ls --version cmake &>/dev/null; then brew update && brew install cmake; fi
   fi