Contstants for data type limits

[Lebostein]

In other programing languages you can find constants for the limits, like
http://bricxcc.sourceforge.net/nbc/nxcd ... imits.html

Would useful to use such constants for the PB integer data types.

Edit: oh, the thread exist already:
http://www.purebasic.fr/english/viewtop ... =3&t=53102