netcat: add from OE-Classic
netcat: add from OE-Classic

Changes from the OE-Classic recipe:
* Use ALTERNATIVE_${PN} instead of ALTERNATIVE_NAME
* Add LIC_FILES_CHKSUM
* Move SRC_URI checksums underneath SRC_URI

Based on a patch by Vladimir Redzhepoff <vladimir.redzhepoff@promwad.com>

Signed-off-by: Paul Eggleton <737d4dae46a541673d7bf4e0d5b32714b16528d8@linux.intel.com>

joeythesaint/meta-networking,WindRiver-OpenSourceLabs/meta-networking