Unified the setup of version numbers so that they all are based on the version

number setup in the include/osg/Version header file.

src/osg/Version.cpp

@@ -11,10 +11,42 @@
  * OpenSceneGraph Public License for more details.
 */
 #include <osg/Version>
+#include <string>
+
+extern "C" {
 
 const char* osgGetVersion()
 {
-    return "1.9";
+    static char osg_version[256];
+    static int osg_version_init = 1;
+    if (osg_version_init)
+    {
+        if (OSG_VERSION_RELEASE==0)
+        {
+            if (OSG_VERSION_REVISION==0)
+            {
+                sprintf(osg_version,"%d.%d",OSG_VERSION_MAJOR,OSG_VERSION_MINOR);
+            }
+            else
+            {
+                sprintf(osg_version,"%d.%d-%d",OSG_VERSION_MAJOR,OSG_VERSION_MINOR,OSG_VERSION_REVISION);
+            }
+        }
+        else
+        {
+            if (OSG_VERSION_REVISION==0)
+            {
+                sprintf(osg_version,"%d.%d.%d",OSG_VERSION_MAJOR,OSG_VERSION_MINOR,OSG_VERSION_RELEASE);
+            }
+            else
+            {
+                sprintf(osg_version,"%d.%d.%d-%d",OSG_VERSION_MAJOR,OSG_VERSION_MINOR,OSG_VERSION_RELEASE,OSG_VERSION_REVISION);
+            }
+        }
+        osg_version_init = 0;
+    }
+    
+    return osg_version;
 }
 
 
@@ -22,3 +54,5 @@ const char* osgGetLibraryName()
 {
     return "OpenSceneGraph Library";
 }
+
+}