Remove JDK1.6 dependency.

git-svn-id: https://svn.apache.org/repos/asf/xmlgraphics/fop/trunk@1339723 13f79535-47bb-0310-9956-ffa450edef68

src/java/org/apache/fop/afp/modca/GraphicsObject.java

      * @param lineWidth the line width multiplier
      */
     public void setLineWidth(float lineWidth) {
-        float epsilon = Float.MIN_NORMAL;
+        float epsilon = Float.intBitsToFloat ( 0x00800000 ); // Float.MIN_NORMAL (JDK1.6)
         if ( Math.abs ( graphicsState.lineWidth - lineWidth ) > epsilon ) {
             addObject(new GraphicsSetFractionalLineWidth(lineWidth));
             graphicsState.lineWidth = lineWidth;