Fix https://issues.apache.org/bugzilla/show_bug.cgi?id=47880
Clarify error messages in *.sh files to mention that if a script is not found it might be because execute permission is needed.

git-svn-id: https://svn.apache.org/repos/asf/tomcat/tc5.5.x/trunk@1159311 13f79535-47bb-0310-9956-ffa450edef68
6 files changed