MFC r221074, r221075, r221076, r221078:

r221074:

Fix assert messages.

r221075:

For conversation between hastctl and hastd we should use HASTCTL_CMD
defines.

r221076:

Rename HASTCTL_ defines, which are used for conversation between main
hastd process and workers, remove unused one and set different range
of numbers. This is done in order not to confuse them with HASTCTL_CMD
defines, used for conversation between hastctl and hastd, and to avoid
bugs like the one fixed in r221075.

r221078:

Add missing ifdef. This fixes build with NO_OPENSSL.

Reported by: Pawel Tyll <ptyll@nitronet.pl>

Approved by: pjd (mentor)