[8u] 8056124: Hotspot should use PICL interface to get cacheline size on SPARC

[Igor Veresov]

JDK9:   http://hg.openjdk.java.net/jdk9/hs-comp/hotspot/rev/63934ec778a2
Webrev for 9: http://cr.openjdk.java.net/~iveresov/8056124/webrev.03/
Webrev for 8: http://cr.openjdk.java.net/~iveresov/8056124-8u/webrev/
JBS: https://bugs.openjdk.java.net/browse/JDK-8056124

Nightlies are clean, the patch needed to be adjusted to account for the fact that there is no VM_Version::_L1_data_cache_line_size in jdk8.

igor