Remove year from copyright headers.

Also add a space between Copyright and (c).

The copyright year can be determined using git metadata.

Also remove the duplicated "All rights reserved." - every instance of
this line already has a corresponding "All rights reserved" immediately
below it, except for examples/ioat/kperf/kmod/dma_perf.c, where I have
added it manually.

Performed using this command:

git ls-files | xargs sed -i -e 's/Copyright(c) \(.*\) Intel Corporation. All rights reserved./Copyright (c) Intel Corporation./'

Change-Id: I3779f404966800709024eb1eb66a50068af2716c
Signed-off-by: Daniel Verkamp <[email protected]>

build: Allow relative path for DPDK_DIR

This is very convenient. It also works from subdirectories, as
long as you adjust the relative path you pass appropriately.

Change-Id: I8cfeac380ccb5fad4389ee1feb838f986a837f11
Signed-off-by: Ben Walker <[email protected]>