Install GCC 4.8 on Travis.
Install GCC 4.8 on Travis.

genuinelucifer/CppSharp,SonyaSa/CppSharp,ddobrev/CppSharp,inordertotest/CppSharp,inordertotest/CppSharp,mono/CppSharp,xistoso/CppSharp,genuinelucifer/CppSharp,xistoso/CppSharp,u255436/CppSharp,nalkaro/CppSharp,mydogisbox/CppSharp,genuinelucifer/CppSharp,mydogisbox/CppSharp,ddobrev/CppSharp,mydogisbox/CppSharp,Samana/CppSharp,mohtamohit/CppSharp,mohtamohit/CppSharp,mydogisbox/CppSharp,Samana/CppSharp,mohtamohit/CppSharp,mono/CppSharp,mono/CppSharp,inordertotest/CppSharp,xistoso/CppSharp,genuinelucifer/CppSharp,ktopouzi/CppSharp,nalkaro/CppSharp,SonyaSa/CppSharp,xistoso/CppSharp,ktopouzi/CppSharp,u255436/CppSharp,zillemarco/CppSharp,u255436/CppSharp,xistoso/CppSharp,nalkaro/CppSharp,mydogisbox/CppSharp,nalkaro/CppSharp,nalkaro/CppSharp,SonyaSa/CppSharp,zillemarco/CppSharp,SonyaSa/CppSharp,ktopouzi/CppSharp,mono/CppSharp,mono/CppSharp,Samana/CppSharp,Samana/CppSharp,SonyaSa/CppSharp,zillemarco/CppSharp,zillemarco/CppSharp,ktopouzi/CppSharp,mohtamohit/CppSharp,mohtamohit/CppSharp,genuinelucifer/CppSharp,mono/CppSharp,zillemarco/CppSharp,ktopouzi/CppSharp,inordertotest/CppSharp,inordertotest/CppSharp,ddobrev/CppSharp,ddobrev/CppSharp,u255436/CppSharp,Samana/CppSharp,u255436/CppSharp,ddobrev/CppSharp