Renamed files to match class renaming in r47070:

http://llvm.org/viewvc/llvm-project?rev=47070&view=rev

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@47071 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/Analysis/GREngine.cpp b/Analysis/GRCoreEngine.cpp
similarity index 100%
rename from Analysis/GREngine.cpp
rename to Analysis/GRCoreEngine.cpp

diff --git a/Analysis/GRConstants.cpp b/Analysis/GRExprEngine.cpp
similarity index 100%
rename from Analysis/GRConstants.cpp
rename to Analysis/GRExprEngine.cpp

diff --git a/include/clang/Analysis/PathSensitive/GREngine.h b/include/clang/Analysis/PathSensitive/GRCoreEngine.h
similarity index 100%
rename from include/clang/Analysis/PathSensitive/GREngine.h
rename to include/clang/Analysis/PathSensitive/GRCoreEngine.h