Add -o support for TableGen
Add -o support for TableGen

I figure that misha has done a lot of things on my todo list, the least I
can do is reciprocate a bit.  :)


git-svn-id: a4a6f32337ebd29ad4763b423022f00f68d1c7b7@6571 91177308-0d34-0410-b5e6-96231b3b80d8

lodyagin/bare_cxx,lodyagin/bare_cxx,lodyagin/bare_cxx,lodyagin/bare_cxx,lodyagin/bare_cxx