DMD 1.030 and 2.014 releases

[Ary Borenszweig]

Walter, I think I've found a potential bug in DMD 1.030 while porting it 
to Descent.

Take a look at cast.c, Expression *BinExp::typeCombine(Scope *sc), lines 
1371 and 1374:

/* Pick 'tightest' type
  */
ClassDeclaration *cd1 = tc1->sym->baseClass;
ClassDeclaration *cd2 = tc1->sym->baseClass;

shouldn't the second line use tc2 instead of tc1?

(Eclipse pointed me out that tc2 wasn't used... ;-)