Do not use JFreeChart from internal jar

Use OSGi bundle instead with import-package: org.jfree.chart.*
Remove unused jars from batik and jfreechart
Add releng component for building with buckminster

This enables mirroring of the p2.site using p2 actions from buckminster
This file also contians extra dependencies needed to build the bundles in this repo
Updates bundle versions to 2.6.1
Feature version set to 2.6.1
Syncing versions in feature with plugin versions
Add dependencies to statictis feature
Fix version number for 2.6.1
Fix R_HOME problem on Mac OS X
Improve "install.packages" handling on Mac OS X
Logs error messages and exception in getInitR
Fix the link of "Open R help pages" button
point to the right troubleshooting html file 

in toc.xml for R help pages
change the message of the status object

to the RjException message
Merge branch '2.6.1' of github.com:bioclipse/bioclipse.statistics into 2.6.1
Merge branch '2.6.1' into develop