Forget to update the version numbers in the doc
Update the Docs to the latest versions.

Remove the old 1.5.1 docs and replace with the latest for 1.7.0 release.
Merge branch 'master' of https://github.com/Pktgen/Pktgen-DPDK
Update the doit script for DPDK 1.7

Signed-off-by: Keith Wiles <keith.wiles@windriver.com>