[PM/AA] Wire BasicAA's new pass manager class up to the pass registry.

This ensures that all of the various pieces are working. The next patch
will wire up commandline-driven alias analysis chain building and allow
BasicAA to work with the AAManager.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@260838 91177308-0d34-0410-b5e6-96231b3b80d8