syscall provider naming convention. Re: kern/152822: [patch] DTrace: syscall provider for compat/freebsd32

[Artem Belevich]

I've posted updated version of the patch here:
https://sites.google.com/site/abc678site/files/dt-systrace.patch.gz

This patch uses DTrace module field to specify syscall's compat
variant in the syscall probe name.

The patch also adds syscall probe for linux32 binaries on amd64. I'll
try to add i386 support soon, too, but I have no i386 box I could
compile and test the changes on. I'll try to get one set up under
VirtualBox later, but for now the patch is for 8-STABLE/amd64 only.

--Artem