Replace :hwvirtext with :hwvirtex

`:hwvirtext` isn't an attribute accepted by `modifyvm`.
Add Oracle Linux 6.5 x86_64 template
Add Oracle Linux 6.5 x86 template
Merge pull request #862 from terrywang/oracle-6.5

Oracle Linux 6.5 x86 and x86_64 templates
Merge pull request #851 from Sharpie/fix-hwvirtext

Replace :hwvirtext with :hwvirtex