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
Adds equinox security and swt fragments
Cleans up dependencies

Removes extension of AbstractUIPlugin
and changes most require bundle to import package
Added org.eclpse.ui to platform
Looks at org.eclipse.ui/defaultPerspectiveId when getting initial window
perspective
Adds logging and a fall back to System.getProperty for default
perspective
Updates bundle versions to 2.6.1
Feature version set to 2.6.1
Update version of walware feature in target platform
Record when the version() method is called
Download a specific PDB entry
Added core bio objects for crystals: small organic (ICrystal) and protein (IProteinCrystal)
Merge pull request #42 from egonw/feature/recordedVersion

Record when the version() method is called
Merge pull request #43 from egonw/feature/crystalAndProtein

Feature/crystal and protein
Merge pull request #44 from egonw/feature/downloadSpecificPDBentry

Feature/download specific pd bentry
Fix version number for 2.6.1
Changes the description from "[...] for refseq)." to "[...] for
refseqn)."
Merge pull request #45 from bioclipse/Bug3545

Changes the description in the EBIWSDbfetchWizardPage
Updates cdk and logging to the latest versions

Updated log back to 1.0.13 and slf4j to 1.5.11
Ignore manager if it can not be retrieved

Makes jsexecution fail gracefully when a manager is not available by logging and error and continue