Migrated retain/release checker to use the Generic Data Map in GRState (instead
of using CheckerState).

Removed CheckerState from GRState.

Added class GRStateRef which wraps GRState* and GRStateManager*. This is handy
for generating new states with a single handle.

Added member template set/get functions to GRStateRef/GRState/GRStateManager for
accessing the Generic Data Map.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@54788 91177308-0d34-0410-b5e6-96231b3b80d8
3 files changed