Fix bsnmpd remote denial of service vulnerability. [SA-14:01]

Fix ntpd distributed reflection Denial of Service vulnerability.
[SA-14:02]

Fix BIND remote denial of service vulnerability. [SA-14:04]

Disable hardware RNGs by default. [EN-14:01]

Fix incorrect coalescing of stack entry with mmap. [EN-14:02]

Approved by:	so