UseTokenInfo greatly simplified
+ added check for changed tree after first time firstpass
(if we could remove all the cases were it happen
we could skip all firstpass if firstpasscount > 1)
Only with ExtDebug
+ change_keywords_to_tp implemented to remove
keywords which aren't supported by tp
* break and continue are now symbols of the system unit
+ widestring, longstring and ansistring type released
* corrected operator overloading
* corrected nasm output
+ started inline procedures
+ added starstarn : use ** for exponentiation (^ gave problems)
+ started UseTokenInfo cond to get accurate positions