hg: code-tools/jcov: Switching to ASM6 release

[alexey.fedorchenko at oracle.com]

Changeset: 1bfff4a9a00a
Author:    afedorch
Date:      2017-09-29 10:37 -0700
URL:       http://hg.openjdk.java.net/code-tools/jcov/rev/1bfff4a9a00a

Switching to ASM6 release

! build/build.properties
! build/build.xml
+ build/check-dependecies.xml