[travis-ci] update to point to newer toolchain and one old version
[travis-ci] update to point to newer toolchain and one old version

hollanderic/lkstuff,minglun-tsai/lk,ErikCorryGoogle/lk,srodrig1/lk,littlekernel/lk,srodrig1/lk,littlekernel/lk,hollanderic/lkstuff,ErikCorryGoogle/lk,skabet/lk,hollanderic/lkstuff,sndnvaps/lk,sndnvaps/lk,sndnvaps/lk,sndnvaps/lk,littlekernel/lk,minglun-tsai/lk,minglun-tsai/lk,srodrig1/lk,sndnvaps/lk,travisg/lk,minglun-tsai/lk,ErikCorryGoogle/lk,srodrig1/lk,ErikCorryGoogle/lk,skabet/lk,travisg/lk,littlekernel/lk,travisg/lk,skabet/lk,skabet/lk,srodrig1/lk,travisg/lk,skabet/lk,hollanderic/lkstuff