Docs in OS.java tell us we want microseconds.
Docs in OS.java tell us we want microseconds.

Linux impl already provides microsecs, so lets
switch Solaris impl also to micro instead of milli.


git-svn-id: 9aee25b0727c23acc0dec90e5217993066ef893c@1439337 13f79535-47bb-0310-9956-ffa450edef68

apache/tomcat-native,apache/tomcat-native,apache/tomcat-native,apache/tomcat-native,apache/tomcat-native