update gradle files and project structure along https://github.com/centic9/poi/tree/gradle_build
remove eclipse IDE project files
remove obsolete record generator files

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1888111 13f79535-47bb-0310-9956-ffa450edef68

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1883170 13f79535-47bb-0310-9956-ffa450edef68

- use classpath-build for Java 8, otherwise use modulepath
- save module-info classes to source, when using Java 9+ environment
- rename example packages - otherwise package clashes occured in the tests
- move agile encryption from ooxml to main.
  remove EncryptionInfo XmlBeans and schema and use custom xml marshalling
- move ooxml test classes which reside in the same package as their tested main class
- rename base test classes to "BaseTest..." - temporarily I've used a light version of the main test classes to test scratchpad / ooxml
- build.xml - fixed the Rhino javascript errors of the dependency-macros
- DrawTextParagraph - fixed StringIndexOutOfBounds when logging set to debug level
- use JigSaw provider interface (= Java ServiceLoader), i.e. it wasn't possible (without openening everything), to access ooxml factory classes from main factory stub

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1880164 13f79535-47bb-0310-9956-ffa450edef68