[Patch] trying solve w2k command line length limitations

[Ignacio J. Ortega]

Hola a todos:

I'm trying to solve w2k command line length problems for gump.

what i've tried is to create a properties file from gump instead of
passing the classpath in the command line, make a Launcher class that
loads it in a URLclassloader and start ant's main, this approach by
itself doesnt work at all, javac needs real jars in a real classpath not
a CL with all the jars loaded..

Hence this patch, the Launcher in addition to create a UCL, adds a
system property ant.class.path and starts ant's Main.. i've modified ant
Path type to add this property to the classpath like it's done with
java.class.path ( this property is readonly ).., and if using
build.sysclasspath=only, this property contents are added in addition to
java.class.path..

Comments are welcomed..

Saludos, 
Ignacio J. Ortega 

Index: src/main/org/apache/tools/ant/types/Path.java
===================================================================
RCS file:
/home/cvspublic/ant/src/main/org/apache/tools/ant/types/Path.java,v
retrieving revision 1.47
diff -u -r1.47 Path.java
--- src/main/org/apache/tools/ant/types/Path.java       11 Mar 2003
10:57:42 -0000  1.47
+++ src/main/org/apache/tools/ant/types/Path.java       5 Apr 2003
16:28:25 -0000
@@ -103,6 +103,9 @@
     public static Path systemClasspath = 
         new Path(null, System.getProperty("java.class.path"));
 
+    public static Path antClasspath = 
+        new Path(null, System.getProperty("ant.classpath"));
+
 
     /**
      * Helper class, holds the nested <code>&lt;pathelement&gt;</code>
values.
@@ -556,7 +559,8 @@
         if (order.equals("only")) {
             // only: the developer knows what (s)he is doing
             result.addExisting(Path.systemClasspath, true);
-        
+            result.addExisting(Path.antClasspath, true);
+            
         } else if (order.equals("first")) {
             // first: developer could use a little help
             result.addExisting(Path.systemClasspath, true);