Imported GNU Classpath 0.20

Imported GNU Classpath 0.20
       * Makefile.am (AM_CPPFLAGS): Add classpath/include.
       * java/nio/charset/spi/CharsetProvider.java: New override file.
       * java/security/Security.java: Likewise.
       * sources.am: Regenerated.
       * Makefile.in: Likewise.

From-SVN: r109831

libjava/classpath/java/util/StringTokenizer.java

@@ -132,8 +132,7 @@ public class StringTokenizer implements Enumeration
   {
     len = str.length();
     this.str = str;
-    // The toString() hack causes the NullPointerException.
-    this.delim = delim.toString();
+    this.delim = delim;
     this.retDelims = returnDelims;
     this.pos = 0;
   }