Refactor syntax unicode get ep1

Updates on methods : 
void MCArraysExecCombineByRow(..)
void MCArraysExecSplitByRow(..)
void MCEngineEvalParams(..)
void MCEngineSetNumberFormat(..)
void MCEngineGetNumberFormat(..)
void MCFilesEvalShell(..)

void MCInterfaceExecDeleteObjectChunks(..)
static void MCInterfaceExecChangeChunkOfButton(..)