RFR(XXS) Missing resource mark

[Zhengyu Gu]

Crashed inside handle_alloc_failure_evac() due to missing ResourceMark 
when calling thread->name().

#
#  Internal Error 
(/home/zgu/workspace/shenandoah-jdk10/src/hotspot/share/memory/resourceArea.hpp:63), 
pid=1230, tid=1232
#  fatal error: memory leak: allocating without ResourceMark
#

Webrev: 
http://cr.openjdk.java.net/~zgu/shenandoah/handle_alloc_evac_rm/webrev.00/

Test:

   hotspot_gc_shenandoah (fastdebug)


Thanks,

-Zhengyu