RFR : JDK-8189765: Improve error reporting for compiling against package not visible due to modules

[Jan Lahoda]

Hi,

When a type cannot be found, javac tries to find it in modules not read 
by the current module and in not exported packages of any module. But 
the current search does not search in the unnamed module. The proposed 
patch is to search in the unnamed module.

Webrev: http://cr.openjdk.java.net/~jlahoda/8189765/webrev.00/
Bug: https://bugs.openjdk.java.net/browse/JDK-8189765

Thanks,
     Jan