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/jni_compiler.h b/src/compiler_llvm/jni_compiler.h
index 0731e92..4648180 100644
--- a/src/compiler_llvm/jni_compiler.h
+++ b/src/compiler_llvm/jni_compiler.h
@@ -46,12 +46,12 @@
 namespace art {
 namespace compiler_llvm {
 
-class CompilationUnit;
+class LlvmCompilationUnit;
 class IRBuilder;
 
 class JniCompiler {
  public:
-  JniCompiler(CompilationUnit* cunit,
+  JniCompiler(LlvmCompilationUnit* cunit,
               Compiler const& compiler,
               OatCompilationUnit* oat_compilation_unit);
 
@@ -64,7 +64,7 @@
                                       bool is_static, bool is_target_function);
 
  private:
-  CompilationUnit* cunit_;
+  LlvmCompilationUnit* cunit_;
   const Compiler* compiler_;
 
   llvm::Module* module_;