hg: panama/dev: Automatic merge with foreign

[maurizio.cimadamore at oracle.com]

Changeset: 2df4cb9a1cba
Author:    mcimadamore
Date:      2018-09-03 13:24 +0200
URL:       http://hg.openjdk.java.net/panama/dev/rev/2df4cb9a1cba

Automatic merge with foreign

- src/jdk.jextract/share/classes/com/sun/tools/jextract/FindSymbol.java
- src/jdk.jextract/share/classes/com/sun/tools/jextract/MacroParser.java
- src/jdk.jextract/share/classes/com/sun/tools/jextract/Printer.java
- src/jdk.jextract/share/classes/com/sun/tools/jextract/Validators.java