* opt/split.sml (sexp): don't split HANDLE (it's incorrect).
(funeffect): embryo to detect side-effect free APPs (non-functional).
(splitThreshold): to put a cap on inlining.
(stfn): don't bother splitting inlinable TFNs.
* opt/fixfix.sml (curry): fixed bug when uncurrying cooked functions.
* opt/fcontract.sml (fcFun):  fix bug when undertaking mut-rec functions.
* main/flintcomp.sml:  added `recover' to help debugging.
updated the fold to allow extraction of Fi and return it at the end.
* lsplit/ls-inline.sml (oneBranch): fixed the wrapper function.
* flint/flintutil.sml (freevars):  forgot to count the arg of SWITCH.
* flint/flint.sig:  added a tfkind to TFN (only inlining for now).
* main/control.sml: new file. Moved from TopLevel/viscomp/control.sml
(splitThreshold): new var.
* TopLevel/viscomp/control.sig (FLINT.printFctTypes): to reduce clutter.
(splitThreshold): to control splitting agressiveness.
* TopLevel/viscomp/control.sml:  moved substructs outside so that clients
  can refer to them directly (rather than through Control.Foo) to reduce
  spurious dependencies.
* TopLevel/main/{codes,compile}: call `split' from flintcomp, not compile.
* kernel/ltyextern.sml (tnarrow), reps/{reify,rttype,typeoper}.sml:
  flatten arguments when reifying them since the pretty-printer doesn't
  know how to deal with flattened reified TFNs.