travis: try to update precise -> trusty

.travis.yml

@@ -2,6 +2,9 @@ os:
   - linux
 #  - osx
 
+sudo: required
+dist: trusty
+
 language: cpp
 compiler:
   - gcc

tools/scripts/travis_before_install.sh

@@ -5,13 +5,13 @@
 set -e
 
 # sdl2
-sudo add-apt-repository --yes ppa:bartbes/love-stable
+#sudo add-apt-repository --yes ppa:bartbes/love-stable
 # cmake
-sudo add-apt-repository --yes ppa:george-edison55/precise-backports
+#sudo add-apt-repository --yes ppa:george-edison55/precise-backports
 # gcc 4.7
-sudo add-apt-repository --yes ppa:ubuntu-toolchain-r/test
+#sudo add-apt-repository --yes ppa:ubuntu-toolchain-r/test
 # boost
-sudo add-apt-repository --yes ppa:boost-latest/ppa
+#sudo add-apt-repository --yes ppa:boost-latest/ppa
 
-sudo apt-get update -qq
+#sudo apt-get update -qq
 

tools/scripts/travis_install.sh

@@ -4,14 +4,14 @@
 
 set -e
 
-sudo apt-get install gcc-4.8 g++-4.8;
-sudo update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-4.8 90;
-sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-4.8 90;
+#sudo apt-get install gcc-4.8 g++-4.8;
+#sudo update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-4.8 90;
+#sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-4.8 90;
 
-sudo apt-get install libglew-dev libsdl2-dev libdevil-dev libopenal-dev libogg-dev \
-  libvorbis-dev libfreetype6-dev p7zip-full libxcursor-dev libunwind7-dev
+sudo apt-get install -y libglew-dev libsdl2-dev libdevil-dev libopenal-dev libogg-dev \
+  libvorbis-dev libfreetype6-dev p7zip-full libxcursor-dev libunwind8-dev
 
-sudo apt-get install libboost-thread1.55-dev libboost-regex1.55-dev libboost-system1.55-dev \
+sudo apt-get install -y libboost-thread1.55-dev libboost-regex1.55-dev libboost-system1.55-dev \
   libboost-program-options1.55-dev libboost-signals1.55-dev libboost-chrono1.55-dev \
   libboost-filesystem1.55-dev libboost-test1.55-dev binutils-gold cmake cmake-data