MFC r227290 and r227291:

MFC r227290 and r227291:

r227290:
 Fix the DTrace pid return trap interrupt vector.  Previously we were using
 31, but that vector is reserved.

 Without this fix, running dtrace -p <pid> would either cause the target
 process to crash or the kernel to page fault

r227291:
 Replace fasttrap_copyout() with uwrite().  FreeBSD copyout() is not able to
 write to the .text section of a process.

Approved by:	re (kib)

git-svn-id: svn://svn.freebsd.org/base/releng/9.0@227946 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f