This is to make it easier to build dwmblocks without xlib so you can
use it on wayland or other x wms.

This meant that the delimiters were added when when both the icon and
output where empty.

This is useful when using commands such as tr -d '\n' to strip newlines
from output.

code cleanup.

delimLen didn't count in null-terminator.
On line 62 the null terminator character doesn't get copied.

Thanks to tph5595.

This should not affect other platforms at all.

prevents dwmblocks from crashing because of the status string getting
longer than the underlying buffer

Initialize all signals from RTMIN to RTMAX with a dummy handler before
actually setting the "real" handlers.

OpenBSD.

Bug was found where certain modules caused dwm to lag horribly.
Reverting until a fix can be found.
This reverts commit 3da92ebccb.