strchr.3: Small wording fixes.
kernel - remove kprintf info about magazine capacity

This kprintf was added when the magazine capacity calculation was
modified (commit 765b1ae0159cca211559c3035641d842f28defd7).

While it only emits with verbose boot, the message can become quite a
nuisance with tmpfs mounts.  Running poudriere with verbose boot
effectively takes away the first virtual terminal.  This information
isn't very useful anymore, so get rid of it altogether.

Approved-by: dillon
kernel/pf: Fix a bunch of gcc47 -Waddress warnings.

The REASON_SET() macro is sometimes called with the address of a local
u_short instead of a pointer passed to the macro's caller. In its NULL
check, gcc47 detects that the address can never be NULL and issues a
-Waddress warning which part of -Wall.

To silence it, go via a u_short pointer in the macro. This fix is about
as harmless as the "issue" gcc47 was warning about.

While here, put two "x" parameters in parentheses.