add massiv-serialise to non-parallel builds
add massiv-serialise to non-parallel builds

perhaps more should be added, like massiv-persist

cc @lehins

The stackage build server has 8GB ram and currently
compiling massiv-serialise tests/Main.hs seems to need about 50% RAM

mrkkrp/stackage,simonmichael/stackage,Daniel-Diaz/stackage,jonschoning/stackage