Rename compiler_llvm CompilationUnit to LlvmCompilationUnit

Also fixed stray ART_TEST_CFLAGS to LOCAL_CFLAGS
Also fixed relative includes

Tried to change CompilationUnit to reference LlvmCompilationUnit, but
that causes issues because of the split libart-compiler
libart-compiler-llvm.

Change-Id: I7a490f339add6355a20c1cedae858ccf6967a6aa
diff --git a/src/compiler_llvm/stub_compiler.h b/src/compiler_llvm/stub_compiler.h
index 9139acc..312b3af 100644
--- a/src/compiler_llvm/stub_compiler.h
+++ b/src/compiler_llvm/stub_compiler.h
@@ -33,19 +33,19 @@
 namespace art {
 namespace compiler_llvm {
 
-class CompilationUnit;
+class LlvmCompilationUnit;
 class CompilerLLVM;
 class IRBuilder;
 
 class StubCompiler {
  public:
-  StubCompiler(CompilationUnit* cunit, Compiler& compiler);
+  StubCompiler(LlvmCompilationUnit* cunit, Compiler& compiler);
 
   CompiledInvokeStub* CreateInvokeStub(bool is_static, const char* shorty);
   CompiledInvokeStub* CreateProxyStub(const char* shorty);
 
  private:
-  CompilationUnit* cunit_;
+  LlvmCompilationUnit* cunit_;
   const Compiler* compiler_;
   llvm::Module* module_;
   llvm::LLVMContext* context_;