Travis config that builds C++ tools
Travis config that builds C++ tools

Signed-off-by: Rick Altherr <8d1509bf509ebdf080240b52ca7c44886e3b1782@kc8apf.net>

SymbiFlow/prjxray,SymbiFlow/prjxray,SymbiFlow/prjxray,SymbiFlow/prjxray,SymbiFlow/prjxray