I’m not sure what your question is but the error is pretty clear, Tomcat has a read-lock on the JAR file (in this case jsf-impl.jar) and NTFS will not allow a file to be deleted while open read locks exist on it.
Keep in mind that MyEclipse does do hot deployment for you, so if you are using an exploded deployment (it looks like you are) then every time you change a file in your project, it is pushed out to Tomcat automatically. Just make sure to setup your web context (“xxxx” in this case) to reload changed files and then you won’t need to redeploy all the time. Check the Tomcat docs on how to do that.