hg: panama/dev: 8223947: jextract should normalize paths in layout names

[maurizio.cimadamore at oracle.com]

Changeset: fb878e05cd60
Author:    mcimadamore
Date:      2019-05-15 18:59 +0100
URL:       http://hg.openjdk.java.net/panama/dev/rev/fb878e05cd60

8223947: jextract should normalize paths in layout names
Reviewed-by: hjen

! src/jdk.jextract/share/classes/com/sun/tools/jextract/tree/LayoutUtils.java
+ test/jdk/com/sun/tools/jextract/illegalCharsInHeaders/IllegalCharsInHeadersTest.java
+ test/jdk/com/sun/tools/jextract/illegalCharsInHeaders/test-minus.h