Ticket #37505: patch-tk8.6

--- src/tkButton.c.orig 2013-01-04 23:24:45.000000000 -0500
+++ src/tkButton.c      2013-01-04 23:28:29.000000000 -0500
@@ -526,8 +526,6 @@
 static Blt_TileChangedProc TileChangedProc;
 static Tcl_CmdProc ButtonCmd, LabelCmd, CheckbuttonCmd, RadiobuttonCmd;
 
-EXTERN int TkCopyAndGlobalEval _ANSI_ARGS_((Tcl_Interp *interp, char *script));
-
 #if (TK_MAJOR_VERSION > 4)
 EXTERN void TkComputeAnchor _ANSI_ARGS_((Tk_Anchor anchor, Tk_Window tkwin, 
        int padX, int padY, int innerWidth, int innerHeight, int *xPtr, 
@@ -1890,7 +1888,7 @@
        }
     }
     if ((butPtr->type != TYPE_LABEL) && (butPtr->command != NULL)) {
-       return TkCopyAndGlobalEval(butPtr->interp, butPtr->command);
+       return Tcl_EvalObjEx(butPtr->interp, butPtr->command, TCL_EVAL_GLOBAL);
     }
     return TCL_OK;
 }