Documenting the source of "lib/servlet-api"
Merge branch 'libs/servlet-api/fetch' into libs/servlet-api/upstream
adding servlet api (from tomcat)
Merge branch 'libs/servlet-api/fetch' into libs/jetty/fetch
add: Script for retrieving a recent version of Jetty
add: Make "getJetty.sh" cross-system (due to tipps by BenBE)

- removing absolute paths
- beautify
- complete
- test
- etc.
fix: Additional "stabilizations" to getJetty.sh
add: Documentation in README file
Merge branch 'libs/servlet-api/fetch'
Merge branch 'libs/servlet-api/upstream'
Merge branch 'libs/jetty/fetch'