[[ ExecValue-ization ]] ExecValue now used where it's possible, to avoid useless conversions from any number to string
[[ ExecValue-ization ]] Fixed conversion to array/number issue, which was rendering impossible to quit
[[ ExecValue-ization ]] Few more places updated to use an ExecValue instead of processing a conversion to ValueRef
[[ ExecValue-ization ]] ExecValue brought to more places where converting to a value ref is not necessary
Merge pull request #578 from runrevsebastien/refactor-syntax_unicode_exec_value_variable

Refactor syntax unicode exec value variable