hg: panama/dev: 8221838: jextract generates non-existent type reference for typedef on typedef

[sundararajan.athijegannathan at oracle.com]

Changeset: c988fcd00fc0
Author:    sundar
Date:      2019-04-03 16:06 +0530
URL:       http://hg.openjdk.java.net/panama/dev/rev/c988fcd00fc0

8221838: jextract generates non-existent type reference for typedef on typedef
Reviewed-by: mcimadamore

! src/jdk.jextract/share/classes/com/sun/tools/jextract/TypedefHandler.java
+ test/jdk/com/sun/tools/jextract/test8221838/StructTypedefsTest.java
+ test/jdk/com/sun/tools/jextract/test8221838/libStructtypedefs.c
+ test/jdk/com/sun/tools/jextract/test8221838/structtypedefs.h