Added detection of OS version to RunAnywhere

git-svn-id: https://samskivert.googlecode.com/svn/trunk@1661 6335cc39-0255-0410-8fd6-9bcaacd3b74c

projects/samskivert/src/java/com/samskivert/util/KeyUtil.java

@@ -79,6 +79,14 @@ public class KeyUtil
         return (rem == 0 ? prekey : key + (10 - rem));
     }
 
+    public static void main (String[] args) {
+
+      String base = "888888888888888888"; 
+      for (int ii = 0; ii < 10; ii++) {
+        System.out.println(makeLuhnVerifiable(base + ii));
+      }
+    }
+
     /**
      * Return the luhn remainder for the given key.
      *

projects/samskivert/src/java/com/samskivert/util/RunAnywhere.java

@@ -40,6 +40,14 @@ public class RunAnywhere
     {
         return _isLinux;
     }
+    
+    /**
+     * Returns the string value of the OS version reported by the JVM 
+     */
+    public static final String getOSVersion ()
+    {
+        return _osversion;
+    }
 
     /**
      * Returns {@link System#currentTimeMillis}, but works around a bug on
@@ -91,6 +99,9 @@ public class RunAnywhere
     /** Flag indicating that we're on Linux; initialized when this class
      * is first loaded. */
     protected static boolean _isLinux;
+    
+    /** The version number that our OS reports */
+    protected static String _osversion;
 
     /** Used to ensure that the timer is sane. */
     protected static long _lastStamp, _lastWarning;
@@ -103,6 +114,8 @@ public class RunAnywhere
             _isMacOS = (osname.indexOf("Mac OS") != -1 ||
                         osname.indexOf("MacOS") != -1);
             _isLinux = (osname.indexOf("Linux") != -1);
+            
+            _osversion = System.getProperty("os.version"); 
         } catch (Exception e) {
             // dang, can't grab system properties; we'll just pretend
             // we're not on any of these OSes