testsuite flags fixed

tests/webtbs/tw3540.pp

@@ -1,3 +1,4 @@
+{ %norun }
 { %cpu=i386 }
 { %opt=-s -Amasm -TWin32 -Rintel }
 { Source provided for Free Pascal Bug Report 3540 }

tests/webtbs/tw3751.pp

@@ -4,7 +4,11 @@
 {$mode delphi}
 program turn;
 
-uses cthreads, classes, sysutils;
+uses
+{$ifdef unix}
+  cthreads,
+{$endif}
+  classes, sysutils;
 
 type