[CFLAA] Change FunctionHandle to be common to Steensgaard's and Andersens'

Differential Revision:  https://reviews.llvm.org/D34638

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@306348 91177308-0d34-0410-b5e6-96231b3b80d8
5 files changed