MFC r283479:

MFC r283479:

The kernel sends signals to the processes via ABI specific sv_sendsig method.
Native ABI do not need signal conversion, only emulators may want this. Usually
emulators implements its own sv_sendsig method. For now only ibcs2 emulator does
not have own sv_sendsig implementation and depends on native sendsig() method.
So, remove any extra attempts to convert signal numbers from native sendsig()
methods except from i386 where ibsc2 is living.

git-svn-id: svn://svn.freebsd.org/base/stable/10@293581 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f