FreeBSD_HEAD_amd64_gcc4.9 - Build #461 - Fixed

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FreeBSD_HEAD_amd64_gcc4.9 - Build #461 - Fixed:

Build information: https://jenkins.FreeBSD.org/job/FreeBSD_HEAD_amd64_gcc4.9/461/
Full change log: https://jenkins.FreeBSD.org/job/FreeBSD_HEAD_amd64_gcc4.9/461/changes
Full build log: https://jenkins.FreeBSD.org/job/FreeBSD_HEAD_amd64_gcc4.9/461/console

Change summaries:

287618 by mav:
Disable CTL_IO_DELAY feature.

It is too developer-oriented to be enabled by default.

287617 by hrs:
Remove SIOCGDRLST_IN6 and SIOCGPRLST_IN6 forgotten in the previous commit.

MFC after:	3 days