hg: code-tools/jmh: output: use "---" instead of "N/A" all over the place.

[aleksey.shipilev at oracle.com]

Changeset: b6b8161b42a2
Author:    shade
Date:      2014-08-18 15:30 +0400
URL:       http://hg.openjdk.java.net/code-tools/jmh/rev/b6b8161b42a2

output: use "---" instead of "N/A" all over the place.

! jmh-core/src/main/java/org/openjdk/jmh/profile/LinuxPerfAsmProfiler.java
! jmh-core/src/main/java/org/openjdk/jmh/results/format/TextResultFormat.java