Bug Info:
=========
Mnemonic overlaps on some fonts and it affects for all the look and feels.
If you set the mnemonic for the following characters (p,q,j,g and y) then the mnemonic overlaps on the character and it looks ugly.

JDK info:
=========
java version "1.6.0-rc"
Java(TM) SE Runtime Environment (build 1.6.0-rc-b99)
Java HotSpot(TM) Client VM (build 1.6.0-rc-b99, mixed mode)

Steps to reproduce:
===================
1. Download the attached java file and execute.
2. Apply different look and feels using LookAndFeel Menu.

Expected Behavior:
==================
The mnemonic should appear on bottom of the character with some pixel gap.

Actual Behavior:
================
Mnemonic overlaps on the character.

Please find the attached jpg files for verification on different look and feels.