--- a/src/share/vm/runtime/globals.cpp	Fri Feb 24 18:30:42 2012 -0800
+++ b/src/share/vm/runtime/globals.cpp	Mon Feb 27 13:10:13 2012 +0100
@@ -82,16 +82,19 @@
 }
 
 bool Flag::is_writeable() const {
-  return (strcmp(kind, "{manageable}") == 0 || strcmp(kind, "{product rw}") == 0);
+  return strcmp(kind, "{manageable}") == 0 ||
+         strcmp(kind, "{product rw}") == 0 ||
+         is_writeable_ext();
 }
 
-// All flags except "manageable" are assumed internal flags.
+// All flags except "manageable" are assumed to be internal flags.
 // Long term, we need to define a mechanism to specify which flags
 // are external/stable and change this function accordingly.
 bool Flag::is_external() const {
-  return (strcmp(kind, "{manageable}") == 0);
+  return strcmp(kind, "{manageable}") == 0 || is_external_ext();
 }
 
+
 // Length of format string (e.g. "%.1234s") for printing ccstr below
 #define FORMAT_BUFFER_LEN 16
 
@@ -485,7 +488,7 @@
   }
 }
 
-void CommandLineFlags::printSetFlags() {
+void CommandLineFlags::printSetFlags(outputStream* out) {
   // Print which flags were set on the command line
   // note: this method is called before the thread structure is in place
   //       which means resource allocation cannot be used.
@@ -504,11 +507,11 @@
   // Print
   for (int i = 0; i < length; i++) {
     if (array[i]->origin /* naked field! */) {
-      array[i]->print_as_flag(tty);
-      tty->print(" ");
+      array[i]->print_as_flag(out);
+      out->print(" ");
     }
   }
-  tty->cr();
+  out->cr();
   FREE_C_HEAP_ARRAY(Flag*, array);
 }
 
@@ -521,7 +524,7 @@
 
 #endif // PRODUCT
 
-void CommandLineFlags::printFlags(bool withComments) {
+void CommandLineFlags::printFlags(outputStream* out, bool withComments) {
   // Print the flags sorted by name
   // note: this method is called before the thread structure is in place
   //       which means resource allocation cannot be used.
@@ -538,10 +541,10 @@
   qsort(array, length, sizeof(Flag*), compare_flags);
 
   // Print
-  tty->print_cr("[Global flags]");
+  out->print_cr("[Global flags]");
   for (int i = 0; i < length; i++) {
     if (array[i]->is_unlocked()) {
-      array[i]->print_on(tty, withComments);
+      array[i]->print_on(out, withComments);
     }
   }
   FREE_C_HEAP_ARRAY(Flag*, array);