long compile times of FunctionalRecordUpdate

[mnegovanovic]

tmp $ time smltojs fru.sml
[reading source file: fru.sml]
[wrote JavaScript file: MLB/Js/fru-sml.js]
[Created file run.html]

real 0m49.139s
user 0m49.028s
sys 0m0.037s

File located at: https://gist.github.com/DarinM223/7b55e617070969933f797053a7c15652

[mnegovanovic]

time smltojs src/shared/fru.sml
[reading source file: src/shared/fru.sml]
[wrote JavaScript file: src/shared/MLB/Js/fru-sml.js]
[Created file run.html]

real 0m5.023s
user 0m4.894s
sys 0m0.130s

10x speed-up with recent HEAD ... can we go faster?

Regards