hg: jigsaw/m2/langtools: Don't use JRTImage when jrt: not available

[jonathan.gibbons at oracle.com]

Changeset: adfba96aaec6
Author:    jjg
Date:      2014-11-25 18:33 -0800
URL:       http://hg.openjdk.java.net/jigsaw/m2/langtools/rev/adfba96aaec6

Don't use JRTImage when jrt: not available

! src/jdk.compiler/share/classes/com/sun/tools/javac/code/ClassFinder.java
! src/jdk.compiler/share/classes/com/sun/tools/javac/file/JRTIndex.java