Backport: precompile generation fixes#29071

Merged

KristofferC merged 4 commits intorelease-1.0from kc/backport_precompile_fixes

Sep 8, 2018

+102-1,238

Commits on Sep 6, 2018

implement the REPL replayer on Windows (#28608 )
KristofferC
committed
work around precompile emitter failing to escape certain strings
KristofferC
committed
make sure that the read task is done when precompiling (#29024 )
KristofferC
committed

Commits on Sep 8, 2018

comment out assertion
KristofferC
committed