Added Oracle Linux 5.10 & 6.5 x86_64 boxes

Added the following 2 updated boxes due to the new releases
* Oracle Linux 5.10 x86_64
* Oracle Linux 6.5 x86_64

Start to use the new naming scheme (`<OS name>-<version>-<architecture>`) for `.box` files and their [sources](https://github.com/terrywang/vagrantboxes).

Please merge;-)