Merged r1587272 from tomcat/trunk:
Print a warning in case if neither server nor client jvm is found by service.bat.
Fix comments (addresses sebb's note in "Re: r1000718").

git-svn-id: https://svn.apache.org/repos/asf/tomcat/tc7.0.x/trunk@1587273 13f79535-47bb-0310-9956-ffa450edef68