Make all pointers to TargetRegisterClass const since they are all pointers to static data that should not be modified.
Make all pointers to TargetRegisterClass const since they are all pointers to static data that should not be modified.

git-svn-id: a4a6f32337ebd29ad4763b423022f00f68d1c7b7@151134 91177308-0d34-0410-b5e6-96231b3b80d8

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