travis: disable GCC 4.7 (missing sqlite binary on conan.io) and GCC 4.6 (weird compile error that I will fix later)
travis: disable GCC 4.7 (missing sqlite binary on conan.io) and GCC 4.6 (weird compile error that I will fix later)

TyRoXx/sqlite3pp,TyRoXx/sqlite3pp