Some minor changes have been made in parser:
- Added ReadINI_ParseStart and ReadINI_ParseEnd call.
- Function returns SMCResult instead of bool. To avoid unecessary complexity and duplicating natives, this feels more appropriate to let these functions to share some SMCResult and SMCParse constants. Since properly documented, this should be ok.
- Made sure curtok is set to 0 when ptr_val is null, otherwise unexpected value would be passed into the forward.
