Set MAKEFLAGS in a single place in .travis.yml (#581)
Set MAKEFLAGS in a single place in .travis.yml (#581)


p4lang/p4c,p4lang/p4c,mbudiu-vmw/p4c-clone,hanw/p4c,hanw/p4c,hanw/p4c,p4lang/p4c,mbudiu-vmw/p4c-clone,mbudiu-vmw/p4c-clone,p4lang/p4c,hanw/p4c,p4lang/p4c,mbudiu-vmw/p4c-clone