hg: panama/dev: 8207755: Improve test with struct to cover jextract and binder

[henry.jen at oracle.com]

Changeset: 7fc130e8fd5e
Author:    henryjen
Date:      2018-07-17 19:41 -0700
URL:       http://hg.openjdk.java.net/panama/dev/rev/7fc130e8fd5e

8207755: Improve test with struct to cover jextract and binder
Reviewed-by: sundar

! src/java.base/share/classes/jdk/internal/foreign/LayoutResolver.java
! src/java.base/share/classes/jdk/internal/foreign/abi/sysv/x64/CallingSequenceBuilderImpl.java
+ test/jdk/com/sun/tools/jextract/JtregJextract.java
- test/jdk/com/sun/tools/jextract/StructTest.java
- test/jdk/com/sun/tools/jextract/struct.h
+ test/jdk/com/sun/tools/jextract/testStruct/LibStructTest.java
+ test/jdk/com/sun/tools/jextract/testStruct/StructTest.java
+ test/jdk/com/sun/tools/jextract/testStruct/libStruct.c
+ test/jdk/com/sun/tools/jextract/testStruct/struct.h