Differentiate between ',' and '.'
|Reported by:||mmadia||Owned by:||nobody|
Currently (hrev43937) DeskCalc treats ',' and '.' as decimal points. This leads to parse errors when pasting dollar amounts -- e.g., $1,234.56 or €1.234.56. Once the characters are differentiated based upon the current locale, the numeric seperator could be automatically stripped out, leaving just the optional decimal point.