Fix #251 by patching glassfish-corba

[smillidge]

For the record the diff from glassfish-corba-orb 4.0.1 is;

diff -r 5541165fd78e orbmain/src/main/java/com/sun/corba/ee/impl/encoding/CDRInputStream_1_0.java
--- a/orbmain/src/main/java/com/sun/corba/ee/impl/encoding/CDRInputStream_1_0.java  Fri Mar 20 09:34:40 2015 -0400
+++ b/orbmain/src/main/java/com/sun/corba/ee/impl/encoding/CDRInputStream_1_0.java  Sat Apr 18 08:28:48 2015 +0100
@@ -144,7 +144,6 @@
     private static final OMGSystemException omgWrapper = OMGSystemException.self;
     private static final String K_READ_METHOD = "read";
     private static final int MAX_BLOCK_LENGTH = 0x7fffff00;
-    protected static final String EMPTY_STRING = "";

     protected BufferManagerRead bufferManagerRead;
     protected ByteBuffer byteBuffer;
@@ -497,7 +496,7 @@
         // zero to mean empty string.
         //
         if (len == 0) {
-            return EMPTY_STRING;
+            return new String("");
         }

         char[] result = getConvertedChars(len - 1, getCharConverter());
@@ -516,8 +515,8 @@
         // zero to mean empty string.
         //
         if (len == 0) {
-            return EMPTY_STRING;
-        }
+            return new String("");
+       }

         len--;
         char[] c = new char[len];
@@ -567,7 +566,7 @@
         // zero to mean empty string.
         //
         if (len == 0) {
-            return EMPTY_STRING;
+            return new String("");
         }

         checkForNegativeLength(len);
diff -r 5541165fd78e orbmain/src/main/java/com/sun/corba/ee/impl/encoding/CDRInputStream_1_1.java
--- a/orbmain/src/main/java/com/sun/corba/ee/impl/encoding/CDRInputStream_1_1.java  Fri Mar 20 09:34:40 2015 -0400
+++ b/orbmain/src/main/java/com/sun/corba/ee/impl/encoding/CDRInputStream_1_1.java  Sat Apr 18 08:28:48 2015 +0100
@@ -184,7 +184,7 @@
         // zero to mean empty string.
         //
         if (len == 0)
-            return EMPTY_STRING;
+            return new String("");

         checkForNegativeLength(len);

diff -r 5541165fd78e orbmain/src/main/java/com/sun/corba/ee/impl/encoding/CDRInputStream_1_2.java
--- a/orbmain/src/main/java/com/sun/corba/ee/impl/encoding/CDRInputStream_1_2.java  Fri Mar 20 09:34:40 2015 -0400
+++ b/orbmain/src/main/java/com/sun/corba/ee/impl/encoding/CDRInputStream_1_2.java  Sat Apr 18 08:28:48 2015 +0100
@@ -160,7 +160,7 @@
         int len = read_long();

         if (len == 0)
-            return EMPTY_STRING;
+            return new String("");

         checkForNegativeLength(len);