dpctl: Allow 'goto' instruction for a match-all rule
More breaks for long strings for better readability.

Following commit 3b28f740b8087896610072cfb36e20929f663cd9 do the same
breakout of long strings for other tables.
Increases readability.

Signed-off-by: Vitaliy Ivanov <vitaliyi@interfacemasters.com>
trivial: empty lines and tabs vs spaces correction.

Signed-off-by: Vitaliy Ivanov <vitaliyi@interfacemasters.com>
treewide: remove *.bak files.

Signed-off-by: Vitaliy Ivanov <vitaliyi@interfacemasters.com>
Various bug fixes.

- Add checksum recalculation after set icmo fields.
- Fix IPv6 flow label parsing
- Fix incorrect size of VLAN pcp in the parsing
- Correct netpdl specification for the IPv6 Neighbor Discovery source
  link layer field.
Update README.md
Merge pull request #134 from hdnivara/master

dpctl: Allow 'goto' instruction for a match-all rule
Merge pull request #140 from InterfaceMasters/imt_fixes

Set of cleanup fixes.
Correct IPv6 ecn and dscp parsing

IPv6 ecn and dscp fields were missing on the packet parsing engine.
Add tcp and udp checksum recalculation after ipv6 src and dst set_field.

The addition fix wrong checksum error after a set_field action with
ipv6 src or ipv6 dst.
Add support to match sctp

This commmit introduces to the parsing engine the specification
of the sctp header. Now it is possible to match sctp src and dst
ports.
Recalculate sctp check sum after set_field action.

This commit fixes wrong checksum of sctp packets after changes due
to a set_field action on the field sctp src and dst ports.

Also changes the crc32.c and crc32.h files with code to calculate
the crc32c, used by the sctp checksum.
Fix IPv6 neighbor discovery target pre requisites check.

The check for icmp type was not working because of
the order of insertion on the flow mod message parsing.

Also it fixes the set_field action, calculating the
checksum after change the neighbor discovery target field.

This commit also removes unecessary debugging printf.
Fix wrong checksum calculation of IPv6 neighbor discovery target.