hg: jdk/client: 8209113: Use WeakReference for lastFontStrike for created Fonts

[philip.race at oracle.com]

Changeset: 269d810313dc
Author:    prr
Date:      2019-12-05 13:24 -0800
URL:       https://hg.openjdk.java.net/jdk/client/rev/269d810313dc

8209113: Use WeakReference for lastFontStrike for created Fonts
Reviewed-by: serb, jdv

! src/java.desktop/share/classes/sun/font/Font2D.java
! src/java.desktop/share/classes/sun/font/FontStrikeDisposer.java
! src/java.desktop/share/classes/sun/font/SunFontManager.java