Fixed compiler version info to display the C++ compiler name correctly when...

Fixed compiler version info to display the C++ compiler name correctly when using clang (fix by Bence Janos Szabo)

Change-Id: I4b61e6262b522ce093f0c51d11226be0d1e992a5
Signed-off-by: Botond Baranyi <botond.baranyi@ericsson.com>