Have a global option for international users -- big.mark and decimal.mark

[csrabak]

If we run any of the examples with the global R session option OutDec=","; the resulting graph shows:
Warning messages: 1: Problem while computing n.obs = .prettyNum(n). i 'big.mark' and 'decimal.mark' are both ',', which could be confusing

It is very complicated to guess what of the several functions on the pipe is[are] required to have a call to comma_format() and to which parameter[!] in order to have this fixed.

Also, IIUC the formatting for decimal mark and big mark would not solve the need to have a semicolon separating the several statisitics in order to not confuse with the decimal (radix) mark.

Would this possible?

Regards