Bug 441610 - Release- and Build-Management for Mars https://bugs.eclipse.org/bugs/show_bug.cgi?id=441610

updated orbit repo to orbit-r
Bug 446035 - Version Upgrade for org.apache.httpcomponents.httpclient and org.apache.httpcomponents.httpcore

https://bugs.eclipse.org/bugs/show_bug.cgi?id=446035
(cherry picked from commit 10fe49f050f649d33bd04eedb00611c558d6df1f)
Bug 441610 - Release- and Build-Management for Mars https://bugs.eclipse.org/bugs/show_bug.cgi?id=441610

updated orbit repo to orbit-r