net-snmp: install net-snmp-config script to STAGING_BINDIR_CROSS

This recipe was installing net-snmp-config script to STAGING_BINDIR
instead of STAGING_BINDIR_CROSS, during the do_install. It is not
recommended and must be done after staging.

Changes:
* Remove STAGING_BINDIR manipulations from do_install_append
* Add net_snmp_sysroot_preprocess function instead
* Append net_snmp_sysroot_preprocess to SYSROOT_PREPROCESS_FUNCS

Signed-off-by: Alexandre Fournier <alexandre.fournier@kiplink.fr>
Signed-off-by: Joe MacDonald <joe@deserted.net>
lksctp-tools: add recipe (version 1.0.16)

This recipe comes from arago-oe-dev:
https://github.com/mrchapp/arago-oe-dev/tree/master/recipes/lksctp-tools

Signed-off-by: Mihaela Sendrea <mihaela.sendrea@enea.com>
Signed-off-by: Joe MacDonald <joe@deserted.net>
netperf: enable SCTP support

Signed-off-by: Mihaela Sendrea <mihaela.sendrea@enea.com>
Signed-off-by: Joe MacDonald <joe@deserted.net>
netcat-openbsd: fixup patching

Do the patching in the do_patch phase instead of the compile
phase. That way if the compile phase needs to be rerun
patching isn't attempted a second time.

Signed-off-by: Dan McGregor <dan.mcgregor@usask.ca>
Signed-off-by: Joe MacDonald <joe@deserted.net>