Use container-based infrastructure for Travis

CIbuild.sh

@@ -6,6 +6,11 @@ export MCSERVER_BUILD_SERIES_NAME="Travis $CC $TRAVIS_MCSERVER_BUILD_TYPE"
 export MCSERVER_BUILD_ID=$TRAVIS_JOB_NUMBER
 export MCSERVER_BUILD_DATETIME=`date`
 
+if [ "$CXX" == "g++" ]; then
+	# This is a temporary workaround to allow the identification of GCC-4.8 by CMake, required for C++11 features
+	# Travis Docker containers don't allow sudo, which update-alternatives needs, and it seems no alternative to this command is provided, hence:
+	export CXX="/usr/bin/g++-4.8"
+fi
 cmake . -DBUILD_TOOLS=1 -DSELF_TEST=1;
 
 echo "Checking basic style..."