Fix emulated function pointer cast exporting#6939

Merged

kripken merged 3 commits intoincomingfrom

Aug 3, 2018

Commits on Aug 1, 2018

emulated function pointer casts requires function calls for all exports (since we use an i64 return value, and cannot call through an export to JS) - emulated function pointers without casts does n…
kripken
committed

Commits on Aug 2, 2018