fix size_t

From-SVN: r24119

gcc/testsuite/g++.old-deja/g++.jason/operator.C

@@ -2,7 +2,7 @@
 // Build don't link:
 // Special g++ Options:
 
-typedef unsigned long size_t;
+typedef __SIZE_TYPE__ size_t;
 
 struct A {
   int operator?:(int a, int b);	   // WARNING - 

gcc/testsuite/g++.old-deja/g++.law/bad-error6.C

 // Build don't link: 
 // GROUPS passed bad-errors
-typedef unsigned long size_t;
+typedef __SIZE_TYPE__ size_t;
 
 class tt {
     public: