[8u] RFA (XS) 8076274: [TESTBUG] Remove @ignore from runtime\NMT\JcmdDetailDiff.java

[Aleksey Shipilev]

Bug:
  https://bugs.openjdk.java.net/browse/JDK-8076274

Patch applies with reshuffling. Here it is:

diff -r d26d58ed7520 -r 30cbce176b67 test/runtime/NMT/JcmdDetailDiff.java
--- a/test/runtime/NMT/JcmdDetailDiff.java      Thu Feb 07 12:57:24 2019 +0100
+++ b/test/runtime/NMT/JcmdDetailDiff.java      Thu Feb 07 13:18:15 2019 +0100
@@ -26,7 +26,6 @@
  * @summary run NMT baseline, allocate memory and verify output from detail.diff
  * @key nmt jcmd
  * @library /testlibrary /testlibrary/whitebox
- * @ignore
  * @build JcmdDetailDiff
  * @run main ClassFileInstaller sun.hotspot.WhiteBox
  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI
-XX:NativeMemoryTracking=detail JcmdDetailDiff

Zhengyu, can you confirm this is okay for 8u? It seems like an innocious overlook, but maybe the bug
was ignored awaiting some other NMT fix? If so, the testbug issue should have linked NMT bugs
issues, and there is none.

Testing: Linux x86_64 fastdebug, jtreg test/runtime/NMT/JcmdDetailDiff.java

Thanks,
-Aleksey