[intel_app] fix missing freelist

Signed-off-by: Nikolay Nikolaev <n.nikolaev@virtualopensystems.com>
[virtio] performance optimize guest map

When mapping addresses from the guest, do not use ipairs.
They seem to be slow, as is said in this link:
http://lua-users.org/lists/lua-l/2011-05/msg00007.html

Signed-off-by: Nikolay Nikolaev <n.nikolaev@virtualopensystems.com>
[memory] cache virtual to physical page translation

For better performance cache the results of virtual to physical page
address translation and reuse them later. This saves system calls later.

Signed-off-by: Nikolay Nikolaev <n.nikolaev@virtualopensystems.com>
[nfv] migrate to script

Signed-off-by: Nikolay Nikolaev <n.nikolaev@virtualopensystems.com>
Merge pull request #173 from virtualopensystems/performance-v1

Performance improvements