Merge pull request #407 from s0undt3ch/stable

Merge stable v2014.06.19
Added @giannello to AUTHORS.
Export also https_proxy, to make apt-add-repository work.
Merge pull request #408 from giannello/develop

Export https_proxy too
Update changes log
Add RHEL optional repository fixes to the changes log
Bump version for stable release
Use the right GitHub raw URL
Detect Oracle Linux Server 6.5
Overcome the Oracle Linux awkwardness.

`--enablerepo=XYX` disables ALL OTHER REPOS!!!!
Update changes log
Bump version
Merge current develop branch into Stable for v2014.06.21